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patches\u003C/a>\u003C/strong>\u003C/p>",[474,475],{"id":286,"title":287},{"id":283,"title":284},{"id":477,"title":478,"description":479,"plans":480},"MJlLPyxqTcy9ys2UaZYNKQ","Windows 10 v1909 patches","\u003Cp>Windows 10 1909 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+10\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows 10 patches\u003C/a>\u003C/strong>\u003C/p>",[481,482],{"id":283,"title":284},{"id":286,"title":287},{"id":484,"title":485,"description":486,"plans":487},"GscjCa1TQOe5p5Or7g2qyw","Windows 10 v1809 patches","\u003Cp>Windows 10 1809 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+10\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows 10 patches\u003C/a>\u003C/strong>\u003C/p>",[488,489],{"id":283,"title":284},{"id":286,"title":287},{"id":491,"title":492,"description":493,"plans":494},"OeQ8xMmJTmadIiPcKYkhvw","Windows 10 v1803 patches","\u003Cp>Windows 10 1803 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+10\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows 10 patches\u003C/a>\u003C/strong>\u003C/p>",[495,496],{"id":283,"title":284},{"id":286,"title":287},{"id":498,"title":499,"description":500,"plans":501},"Obe8z8snRYGoLT6BZyzhZw","Windows 7 post-EOS and post-ESU patches","\u003Cp>Windows 7 post-end-of-support patches, for computers without Extended Security Updates (ESU), or computers with any full year of ESU updates installed\u003C/p>",[502,503],{"id":283,"title":284},{"id":286,"title":287},"Windows Patches","DXze3dvpTu-HF132vKjSug","microsoft-windows-xp",{"alt":508,"url":509,"width":510,"height":510,"responsiveImage":511},"Windows 11 logo","https://www.datocms-assets.com/166020/1764600963-win11.png",300,{"srcSet":512,"webpSrcSet":513,"sizes":514,"src":515,"width":516,"height":516,"aspectRatio":210,"alt":508,"title":18,"bgColor":517,"base64":518},"https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&fit=crop&h=40 40w,https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&dpr=1.5&fit=crop&h=40 60w,https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&dpr=2&fit=crop&h=40 80w,https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&dpr=3&fit=crop&h=40 120w,https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&dpr=4&fit=crop&h=40 160w","https://www.datocms-assets.com/166020/1764600963-win11.png?auto=compress&crop=focalpoint&fit=crop&fm=webp&h=40 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Server 2012 R2 post-EOS patches","\u003Cp>Windows Server 2012 R2 post-end-of-support patches, for computers without Extended Security Updates (ESU), or computers with any full year of ESU updates installed\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+Server+2012+R2\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows Server 2012 R2 patches\u003C/a>\u003C/strong>\u003C/p>",[529,530],{"id":283,"title":284},{"id":286,"title":287},{"id":532,"title":533,"description":534,"plans":535},"ZaeezXKkT3KGln5CQ4NH9w","Windows Server 2012 post-EOS patches","\u003Cp>Windows Server 2012 post-end-of-support patches, for computers without Extended Security Updates (ESU), or computers with any full year of ESU updates installed\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+Server+2012\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows Server 2012 patches\u003C/a>\u003C/strong>\u003C/p>",[536,537],{"id":283,"title":284},{"id":286,"title":287},{"id":539,"title":540,"description":541,"plans":542},"RYxw9xwXR3-OWnsdr8dFEg","Windows Server 2008 R2 post-EOS and post-ESU patches","\u003Cp>Windows Server 2008 R2 post-end-of-support patches, for computers without Extended Security Updates (ESU), or computers with any full year of ESU updates installed\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Windows+Server+2008+R2\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Windows Server 2008 R2 patches\u003C/a>\u003C/strong>\u003C/p>",[543,544],{"id":283,"title":284},{"id":286,"title":287},"Windows Server Patches","J7WLPCrKS7i7B8sAyJpKWg","microsoft-windows-vista",{"alt":549,"url":550,"width":551,"height":510,"responsiveImage":552},"Windows Server 2012-2022 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Office 2019 post-EOS patches","\u003Cp>Microsoft Office 2019 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Office+2019\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Microsoft Office 2019 patches\u003C/a>\u003C/strong>\u003C/p>",[570,571],{"id":283,"title":284},{"id":286,"title":287},{"id":573,"title":574,"description":575,"plans":576},"MkFk40IJQhCcXnIO2ZDd4Q","Microsoft Office 2016 post-EOS patches","\u003Cp>Microsoft Office 2016 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Office+2016\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Microsoft Office 2016 patches\u003C/a>\u003C/strong>\u003C/p>",[577,578],{"id":283,"title":284},{"id":286,"title":287},{"id":580,"title":581,"description":582,"plans":583},"FFqWfGxfQF2q0uyjyRjVWg","Microsoft Office 2013 post-EOS patches","\u003Cp>Microsoft Office 2013 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Office+2013\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Microsoft Office 2013 patches\u003C/a>\u003C/strong>\u003C/p>",[584,585],{"id":283,"title":284},{"id":286,"title":287},{"id":587,"title":588,"description":589,"plans":590},"XFYgrsOyRpeuEXk29M4z9g","Microsoft Office 2010 post-EOS patches","\u003Cp>Microsoft Office 2010 post-end-of-support patches\u003C/p>\n\u003Cp>\u003Cstrong>\u003Ca href=\"/patches?product=Office+2010\" target=\"_blank\" rel=\"noopener\">Click to see the full list of our Microsoft Office 2010 patches\u003C/a>\u003C/strong>\u003C/p>",[591,592],{"id":283,"title":284},{"id":286,"title":287},"Microsoft Office Patches","VH2unwR4RjycDA1o_6eSFw","microsoft-windows-7",{"alt":597,"url":598,"width":510,"height":510,"responsiveImage":599},"Microsoft Office 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products patches","\u003Cp>We occasionally patch other Windows products, for instance when a critical vulnerability becomes known and the vendor does not provide an official patch in a timely manner\u003C/p>",[613],{"id":283,"title":284},"Other","BrWA-hAsQYSROgTvF-1ecA","microsoft-windows-11",{"alt":618,"url":619,"width":620,"height":621,"responsiveImage":18},"Windows 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more",[688,691],{"id":689,"primary":685,"externalLink":95,"parent":18,"reference":18,"title":690,"description":40,"publishTranslation":42},"B1pEweRaRD2YBkP6aH1CfA","Help center",{"id":692,"primary":42,"externalLink":693,"parent":18,"reference":18,"title":694,"description":40,"publishTranslation":42},"Mk0Yz-yqTk2akShgf7ARNg","https://central.0patch.com/","Sign in",[696,700],{"id":697,"title":698,"url":699},"NDrk5d4kQ96J2aCuTr-gvg","0patch on X","https://twitter.com/0patch",{"id":701,"title":702,"url":703},"GqN4lYxyTMyzcmRllVY4mg","Linked In","https://linkedin.com/company/0patch",{"left":705,"top":705,"width":706,"height":706,"rotate":705,"vFlip":685,"hFlip":685,"body":707},0,24,"\u003Cg fill=\"none\">\u003Cpath d=\"M11.9999 15.0539L6.34619 9.40013L7.39994 8.34637L11.9999 12.9464L16.5999 8.34637L17.6537 9.40013L11.9999 15.0539Z\" fill=\"currentColor\"/>\u003C/g>",{"left":705,"top":705,"width":706,"height":706,"rotate":705,"vFlip":685,"hFlip":685,"body":709},"\u003Cg 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website.",{"tag":722,"attributes":733,"content":18},{"property":734,"content":731},"og:description",{"tag":722,"attributes":736,"content":18},{"name":737,"content":731},"twitter:description",{"tag":722,"attributes":739,"content":18},{"property":740,"content":741},"og:image","https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=format&fit=max&w=1200",{"tag":722,"attributes":743,"content":18},{"property":744,"content":745},"og:image:width","1200",{"tag":722,"attributes":747,"content":18},{"property":748,"content":749},"og:image:height","600",{"tag":722,"attributes":751,"content":18},{"property":752,"content":753},"og:image:alt","CVE-2022-34689",{"tag":722,"attributes":755,"content":18},{"name":756,"content":741},"twitter:image",{"tag":722,"attributes":758,"content":18},{"name":759,"content":753},"twitter:image:alt",{"tag":722,"attributes":761,"content":18},{"property":762,"content":32},"og:locale",{"tag":722,"attributes":764,"content":18},{"property":765,"content":77},"og:type",{"tag":722,"attributes":767,"content":18},{"property":768,"content":6},"og:site_name",{"tag":722,"attributes":770,"content":18},{"property":771,"content":772},"article:modified_time","2026-04-02T12:25:42Z",{"tag":722,"attributes":774,"content":18},{"property":775,"content":40},"article:publisher",{"tag":722,"attributes":777,"content":18},{"name":778,"content":779},"twitter:card","summary",{"tag":722,"attributes":781,"content":18},{"name":782,"content":783},"robots","noindex",[785],{"value":786,"locale":32},"micropatches-for-windows-cryptoapi",[788],{"value":42,"locale":32},"2023-03-01T22:22:00+01:00","Mitja Kolsek","2025-08-21T14:33:52+02:00","BKvjm-vjSjmMy8H64h-FrA",{"blocks":794,"links":795,"value":796},[],[],{"schema":797,"document":798},"dast",{"type":799,"children":800},"root",[801,853,857,861,865,869,873,877,881,886,899,949,953,957,990,1002,1020],{"type":802,"children":803},"paragraph",[804,807,815,817,824,826,833,835,842,844,851],{"type":805,"value":806},"span","August 2022 Windows Updates* brought a fix for ",{"url":808,"meta":809,"type":12,"children":813},"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34689",[810],{"id":811,"value":812},"target","_blank",[814],{"type":805,"value":753},{"type":805,"value":816},", a vulnerability in Windows CryptoAPI that allows an attacker to trick some Windows applications - depending on their use of CryptoAPI certificate caching - into accepting a fraudulent certificate. The vulnerability was reported to Microsoft  by UK NCSC and the NSA, but subsequently ",{"url":818,"meta":819,"type":12,"children":821},"https://twitter.com/TomerPeled92",[820],{"id":811,"value":812},[822],{"type":805,"value":823},"Tomer Peled",{"type":805,"value":825}," and ",{"url":827,"meta":828,"type":12,"children":830},"https://twitter.com/1yoni",[829],{"id":811,"value":812},[831],{"type":805,"value":832},"Yoni Rozenshein",{"type":805,"value":834}," of Akamai reverse engineered Microsoft's patch and provided a ",{"url":836,"meta":837,"type":12,"children":839},"https://www.akamai.com/blog/security-research/exploiting-critical-spoofing-vulnerability-microsoft-cryptoapi",[838],{"id":811,"value":812},[840],{"type":805,"value":841},"detailed analysis",{"type":805,"value":843}," with a ",{"url":845,"meta":846,"type":12,"children":848},"https://github.com/akamai/akamai-security-research/tree/main/PoCs/CVE-2022-34689",[847],{"id":811,"value":812},[849],{"type":805,"value":850},"proof-of-concept",{"type":805,"value":852},".",{"type":802,"children":854},[855],{"type":805,"value":856},"(* While Microsoft published this information in October, they had silently provided the patch two months earlier.)\n",{"type":802,"children":858},[859],{"type":805,"value":860},"The vulnerability is actually a cryptographic flaw, whereby broken MD5 hashing algorithm is used for identifying cached certificates. This allows the attacker to trick a Windows application into misidentifying a fraudulent certificate for a valid, cached one, because they both have the same MD5 hash.",{"type":802,"children":862},[863],{"type":805,"value":864},"It is hard to say which applications are vulnerable; any Windows application using CryptoAPI with certificate caching is a potential candidate, but exploitability may depend on how the application is being used. For instance, Akamai researchers have identified old Chrome versions to be vulnerable, allowing a malicious web site with a fake certificate to impersonate a valid web site.\n",{"type":802,"children":866},[867],{"type":805,"value":868},"While still-supported Windows systems have already received the official vendor fix for this vulnerability, there are Windows systems out there that aren't receiving security fixes from Microsoft anymore. In order to protect these systems, we have created our own micropatches for this vulnerability, which are available through the 0patch service.\n",{"type":802,"children":870},[871],{"type":805,"value":872},"Our patches are logically equivalent to Microsoft's patches for this issue.",{"type":802,"children":874},[875],{"type":805,"value":876},"\n\nMODULE_PATH \".\\crypt32.dll\"\nPATCH_ID 1000006\nPATCH_FORMAT_VER 2\nVULN_ID 1000007\nPLATFORM win64\n\npatchlet_start\n    PATCHLET_ID 1\n    PATCHLET_TYPE 2\n    PATCHLET_OFFSET 0x159f9\n    N_ORIGINALBYTES 5\n    JUMPOVERBYTES 0\n    PIT msvcrt!memcmp,crypt32!0x18c14,crypt32!0x15a01,crypt32!0x15a26\n    \n    ; 0x18c14 -> CCertObject::Release\n    ; 0x15a01 -> FindEndObjectByHash block\n    ; 0x15a26 -> Nevem še\n    \n    code_start\n    \n        mov rsi, rax        ; rax contains the returned certificate structure\n                            ; when searching the cache\n        test rax, rax       ; check if a certificate was found in the cache\n        jz LABEL            ; jump to LABEL if no certificate was found\n       \n        mov rcx, [rax+58h]  ; get cached cerfiticate context\n        mov rdx, [rsp+50h]  ; struct _CERT_CONTEXT *, current certificate\n        mov eax, [rcx+10h]  ; get cached certificate length\n        cmp eax, [rdx+10h]  ; compare length from cached and current certificate\n        jnz LABEL2          ; jump to LABEL2 if lengths are not equal\n       \n        mov rdx, [rdx+8]    ; first buffer, current certificate context\n        mov r8d, eax        ; number of characters to compare\n        mov rcx, [rcx+8]    ; second buffer, cached certificate context\n        call PIT_memcmp     ; compares characters in two buffers\n        test eax, eax       ; memcmp returns 0 if equal\n        jz LABEL            ; jump to LABEL if both contextes were equal\n       \n    LABEL2:\n        mov rcx, rsi        ; contains the returned certificate structure\n                            ; when searching the cache\n        call PIT_0x18c14    ; call CCertObject::Release\n                            ; release decrements the number of references to the certificate\n                            ; if references are 0 then ~CCertObject and PkiFree are called.\n        xor rsi, rsi        ; set rsi to 0\n        mov [rsp+58h], rsi  ; set pointer to cached certificate to 0\n       \n    \n    LABEL:\n        test rsi, rsi       ; is the context of the cached certificate equal?\n        jnz PIT_0x15a26     ; yes, they are equal, trust the certificate\n        jmp PIT_0x15a01     ; no, context not equal, don't trust the certificate\n\n    code_end\npatchlet_end\n\n",{"type":802,"children":878},[879],{"type":805,"value":880}," ",{"type":882,"level":522,"children":883},"heading",[884],{"type":805,"value":885},"Micropatch Availability\n",{"type":802,"children":887},[888,890,897],{"type":805,"value":889},"The micropatch was written for the following ",{"url":891,"meta":892,"type":12,"children":894},"https://0patch.zendesk.com/hc/en-us/articles/4403751356050",[893],{"id":811,"value":812},[895],{"type":805,"value":896},"security-adopted",{"type":805,"value":898}," versions of Windows with all available Windows Updates installed:",{"type":900,"style":901,"children":902},"list","numbered",[903,912,919,926,933,940],{"type":904,"children":905},"listItem",[906],{"type":802,"children":907},[908],{"type":805,"marks":909,"value":911},[910],"strong","Windows 10 v2004",{"type":904,"children":913},[914],{"type":802,"children":915},[916],{"type":805,"marks":917,"value":918},[910],"Windows 10 v1909",{"type":904,"children":920},[921],{"type":802,"children":922},[923],{"type":805,"marks":924,"value":925},[910],"Windows 10 v1809",{"type":904,"children":927},[928],{"type":802,"children":929},[930],{"type":805,"marks":931,"value":932},[910],"Windows 10 v1803",{"type":904,"children":934},[935],{"type":802,"children":936},[937],{"type":805,"marks":938,"value":939},[910],"Windows 7 (without ESU, with ESU year 1, and with ESU year 2)",{"type":904,"children":941},[942],{"type":802,"children":943},[944,947],{"type":805,"marks":945,"value":946},[910],"Windows Server 2008 R2 (without ESU, with ESU year 1, and with ESU year 2)",{"type":805,"value":948},"\n",{"type":802,"children":950},[951],{"type":805,"value":952},"\nThis micropatch has already been distributed to, and applied on, all online 0patch Agents in PRO or Enterprise accounts (unless Enterprise group settings prevent that). ",{"type":802,"children":954},[955],{"type":805,"value":956},"Vulnerabilities like this one get discovered on a regular basis, and attackers know about them all. If you're using Windows that aren't receiving official security updates anymore, 0patch will make sure these vulnerabilities won't be exploited on your computers - and you won't even have to know or care about these things.\n",{"type":802,"children":958},[959,961,971,973,981,983,988],{"type":805,"value":960},"If you're new to 0patch, create a free account in ",{"url":962,"meta":963,"type":12,"children":968},"https://central.0patch.com",[964,967],{"id":965,"value":966},"rel","url noopener noreferrer",{"id":811,"value":812},[969],{"type":805,"value":970},"0patch Central",{"type":805,"value":972},", then install and register 0patch Agent from ",{"url":974,"meta":975,"type":12,"children":978},"https://t.co/UMXoQqpLQh",[976,977],{"id":965,"value":966},{"id":811,"value":812},[979],{"type":805,"value":980},"0patch.com",{"type":805,"value":982},", and email ",{"url":984,"type":12,"children":985},"mailto:sales@0patch.com",[986],{"type":805,"value":987},"sales@0patch.com",{"type":805,"value":989}," for a trial. Everything else will happen automatically. No computer reboot will be needed.",{"type":802,"children":991},[992,994,1000],{"type":805,"value":993},"To learn more about 0patch, please visit our ",{"url":995,"meta":996,"type":12,"children":998},"https://0patch.zendesk.com/hc/en-us",[997],{"id":811,"value":812},[999],{"type":805,"value":97},{"type":805,"value":1001},". ",{"type":802,"children":1003},[1004,1006,1012,1013,1018],{"type":805,"value":1005},"We'd like to thank",{"url":818,"meta":1007,"type":12,"children":1009},[1008],{"id":811,"value":812},[1010],{"type":805,"value":1011}," Tomer Peled",{"type":805,"value":825},{"url":827,"meta":1014,"type":12,"children":1016},[1015],{"id":811,"value":812},[1017],{"type":805,"value":832},{"type":805,"value":1019}," of Akamai for sharing their POC, which allowed us to create a micropatch and protect our users against this attack. We also encourage all security researchers to privately share their analyses with us for micropatching.",{"type":802,"children":1021},[1022],{"type":805,"value":880},{"alt":753,"url":1024,"width":1025,"height":1026,"responsiveImage":1027},"https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png",1600,800,{"srcSet":1028,"webpSrcSet":1029,"sizes":1030,"src":1031,"width":1032,"height":1033,"aspectRatio":228,"alt":753,"title":18,"bgColor":1034,"base64":1035},"https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=compress&crop=focalpoint&dpr=0.25&fit=crop&w=1440 360w,https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=compress&crop=focalpoint&dpr=0.5&fit=crop&w=1440 720w,https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=compress&crop=focalpoint&dpr=0.75&fit=crop&w=1440 1080w,https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=compress&crop=focalpoint&fit=crop&w=1440 1440w","https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=compress&crop=focalpoint&dpr=0.25&fit=crop&fm=webp&w=1440 360w,https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=compress&crop=focalpoint&dpr=0.5&fit=crop&fm=webp&w=1440 720w,https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=compress&crop=focalpoint&dpr=0.75&fit=crop&fm=webp&w=1440 1080w,https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=compress&crop=focalpoint&fit=crop&fm=webp&w=1440 1440w","(max-width: 1440px) 100vw, 1440px","https://www.datocms-assets.com/166020/1774002325-7545_vulncard.png?auto=compress&crop=focalpoint&fit=crop&w=1440",1440,720,"#62ba6a","data:image/png;base64,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",1780067945092]