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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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Kolsek","2025-08-21T14:14:00+02:00","QdlhX4_RRWOSQDjW7tWXrg",{"blocks":793,"links":806,"value":807},[794],{"id":795,"_modelApiKey":796,"__typename":797,"video":798},"OLpGwCBGRdOIYiwwvhbH7A","video_external","VideoExternalRecord",{"url":799,"title":800,"thumbnailUrl":801,"height":802,"provider":803,"providerUid":804,"width":805},"https://www.youtube.com/watch?v=B2VwTv4Fu3o","0patching CVE-2021-26419","https://i.ytimg.com/vi/B2VwTv4Fu3o/hqdefault.jpg",113,"youtube","B2VwTv4Fu3o",200,[],{"schema":808,"document":809},"dast",{"type":810,"children":811},"root",[812,854,867,871,875,879,883,887,889,893,936],{"type":813,"children":814},"paragraph",[815,818,827,829,836,838,843,845,852],{"type":816,"value":817},"span","May 2021 Windows Updates brought a fix for an \"Exploitation More Likely\" ",{"url":819,"meta":820,"type":12,"children":824},"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26419",[821],{"id":822,"value":823},"target","_blank",[825],{"type":816,"value":826},"memory corruption vulnerability in Scripting Engine (CVE-2021-26419)",{"type":816,"value":828}," discovered by ",{"url":830,"meta":831,"type":12,"children":833},"https://twitter.com/ifsecure",[832],{"id":822,"value":823},[834],{"type":816,"value":835},"Ivan Fratric",{"type":816,"value":837}," of ",{"url":839,"type":12,"children":840},"https://googleprojectzero.blogspot.com/",[841],{"type":816,"value":842},"Google Project Zero",{"type":816,"value":844},". Ivan published ",{"url":846,"meta":847,"type":12,"children":849},"https://bugs.chromium.org/p/project-zero/issues/detail?id=2157",[848],{"id":822,"value":823},[850],{"type":816,"value":851},"details and a proof-of-concept",{"type":816,"value":853}," the next day, and we took these to reproduce the vulnerability in our lab and create a micropatch for it.",{"type":813,"children":855},[856,858,865],{"type":816,"value":857},"Since Microsoft's patch was available, we reviewed it and found they only changed function ByteCodeGenerator::LoadCachedHeapArguments such that instead of calling ByteCodeGenerator::EmitPropStore, it now calls ByteCodeGenerator::EmitLocalPropInit.These are undocumented and largely unknown functions but their names imply the vulnerability resides in just-in-time compiler's code generation logic, where the generated code gets an improper level of access to the ",{"url":859,"meta":860,"type":12,"children":862},"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/arguments",[861],{"id":822,"value":823},[863],{"type":816,"value":864},"arguments",{"type":816,"value":866}," object.\n",{"type":813,"children":868},[869],{"type":816,"value":870},"Our micropatch is logically identical to Microsoft's:",{"type":813,"children":872},[873],{"type":816,"value":874},"\n\nMODULE_PATH \"..\\Affected_Modules\\jscript9.dll_11.0.9600.19867_64bit\\jscript9.dll\"\nPATCH_ID 606\nPATCH_FORMAT_VER 2\nVULN_ID 7112\nPLATFORM win64\npatchlet_start\n    PATCHLET_ID 1\n    PATCHLET_TYPE 2\n    PATCHLET_OFFSET 0xbe342\n    N_ORIGINALBYTES 5\n    JUMPOVERBYTES 0\n    PIT jscript9!0x8be60 ; ByteCodeGenerator::EmitLocalPropInit\n    \n    code_start\n        mov r9, rbp ; Some instructions are erased and a new function call added\n        mov r8, rdi\n        mov edx, esi\n        mov rcx, rbx\n        mov rbx, [rsp+70h]\n        add rsp, 40h\n        pop rdi\n        pop rsi\n        pop rbp\n        jmp PIT_0x8be60 ; New call to EmitLocalPropInit\n    code_end\n    \npatchlet_end\n\n",{"type":813,"children":876},[877],{"type":816,"value":878}," ",{"type":813,"children":880},[881],{"type":816,"value":882},"See the micropatch in action:",{"type":813,"children":884},[885],{"type":816,"value":886},"\n",{"item":795,"type":888},"block",{"type":813,"children":890},[891],{"type":816,"value":892},"\nWe'd like to thank  Ivan Fratric for sharing their analysis and POC, which allowed us to create this micropatch for Windows users without official security updates. We also encourage security researchers to privately share their analyses with us for micropatching.\nThis micropatch is immediately available to all 0patch users with a PRO license, and is already downloaded and applied on all online 0patch-protected Windows 7 and Windows Server 2008 R2 machines without Extended Security Updates, or with year 1 of Extended Security Updates.\nTo obtain the micropatch and have it applied on your computer(s) along with other micropatches included with a PRO license, create an account in \n\n",{"type":813,"children":894},[895,901,903,910,912,919,921,926,928,934],{"url":693,"meta":896,"type":12,"children":898},[897],{"id":822,"value":823},[899],{"type":816,"value":900},"0patch Central",{"type":816,"value":902},", install 0patch Agent and register it to your account. Note that no computer restart is needed for installing the agent or applying/un-applying any 0patch micropatch. \nBy the way, if your organization has either ",{"url":904,"meta":905,"type":12,"children":907},"https://blog.0patch.com/2021/05/0patch-security-adopts-windows-10-v1809.html",[906],{"id":822,"value":823},[908],{"type":816,"value":909},"Windows 10 v1809",{"type":816,"value":911}," or ",{"url":913,"meta":914,"type":12,"children":916},"https://blog.0patch.com/2020/11/0patch-keeps-office-2010-secured-after.html",[915],{"id":822,"value":823},[917],{"type":816,"value":918},"Office 2010",{"type":816,"value":920}," installations that stopped receiving security updates, and would like to continue using them, it could be useful to know we've security-adopted both for at least 12 months. To save lots of money and step into the age of reboot-less security patching, contact ",{"url":922,"type":12,"children":923},"mailto:sales@0patch.com",[924],{"type":816,"value":925},"sales@0patch.com",{"type":816,"value":927},".\n\nTo learn more about 0patch, please visit our ",{"url":929,"meta":930,"type":12,"children":932},"https://0patch.zendesk.com/hc/en-us",[931],{"id":822,"value":823},[933],{"type":816,"value":97},{"type":816,"value":935},". ",{"type":813,"children":937},[938],{"type":816,"value":886},{"alt":720,"url":940,"width":941,"height":942,"responsiveImage":943},"https://www.datocms-assets.com/166020/1755778433-vuln_7112_cve-2021-26419-patchcard_twitter_1024x512.png",640,320,{"srcSet":944,"webpSrcSet":945,"sizes":946,"src":947,"width":948,"height":949,"aspectRatio":228,"alt":720,"title":720,"bgColor":950,"base64":951},"https://www.datocms-assets.com/166020/1755778433-vuln_7112_cve-2021-26419-patchcard_twitter_1024x512.png?auto=compress&crop=focalpoint&dpr=0.25&fit=crop&w=1440 360w,https://www.datocms-assets.com/166020/1755778433-vuln_7112_cve-2021-26419-patchcard_twitter_1024x512.png?auto=compress&crop=focalpoint&fit=crop&w=1440 1440w","https://www.datocms-assets.com/166020/1755778433-vuln_7112_cve-2021-26419-patchcard_twitter_1024x512.png?auto=compress&crop=focalpoint&dpr=0.25&fit=crop&fm=webp&w=1440 360w,https://www.datocms-assets.com/166020/1755778433-vuln_7112_cve-2021-26419-patchcard_twitter_1024x512.png?auto=compress&crop=focalpoint&fit=crop&fm=webp&w=1440 1440w","(max-width: 1440px) 100vw, 1440px","https://www.datocms-assets.com/166020/1755778433-vuln_7112_cve-2021-26419-patchcard_twitter_1024x512.png?auto=compress&crop=focalpoint&fit=crop&w=1440",1440,720,"#bf4ca8","data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAoHBwgHBgoICAgLExENDxgNDg0NDhUNDRENFx8ZGCITFhUmHysjGh0oHRUWJDUlKC0vMjIyGSI4PTcwPCsxMi8BCgsLDg0OHBENHC8cFhwvLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vLy8vL//AABEIAAwAGAMBIgACEQEDEQH/xAAZAAABBQAAAAAAAAAAAAAAAAAFAAIDBAb/xAAdEAACAQQDAAAAAAAAAAAAAAAAAgQBAyExERIT/8QAFQEBAQAAAAAAAAAAAAAAAAAABAL/xAAYEQACAwAAAAAAAAAAAAAAAAAAAQIRIf/aAAwDAQACEQMRAD8A1ECMvXIRrDt+ewZEdqLss1uvxsTIBB4QzYyImBDpVebORFK6Ib0//9k=",1780067959669]