Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

CVEs (7,165)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
CVE-2012-1539 1Microsoft 1Internet Explorer Apr 29, 2026 Nov 14, 2012 N/A· v4 8.1 HIGH· v3 9.3 HIGH· v2 Use-after-free vulnerability in Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code via a crafted web site, aka "CTreePos Use After Free Vulnerability."
CVE-2012-5126 1Google 1Chrome Apr 29, 2026 Nov 7, 2012 N/A· v4 N/A· v3 7.5 HIGH· v2 Use-after-free vulnerability in Google Chrome before 23.0.1271.64 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the handling of plug-in placeholders...Show more Use-after-free vulnerability in Google Chrome before 23.0.1271.64 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the handling of plug-in placeholders.Show less
CVE-2012-5125 1Google 1Chrome Apr 29, 2026 Nov 7, 2012 N/A· v4 N/A· v3 7.5 HIGH· v2 Use-after-free vulnerability in Google Chrome before 23.0.1271.64 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the handling of extension tabs.
CVE-2012-5121 1Google 1Chrome Apr 29, 2026 Nov 7, 2012 N/A· v4 N/A· v3 7.5 HIGH· v2 Use-after-free vulnerability in Google Chrome before 23.0.1271.64 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to video layout.
CVE-2012-5116 1Google 1Chrome Apr 29, 2026 Nov 7, 2012 N/A· v4 N/A· v3 7.5 HIGH· v2 Use-after-free vulnerability in Google Chrome before 23.0.1271.64 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the handling of SVG filters.
CVE-2012-4183 5Canonical MozillaOpensuse+2 more 13Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+10 more Apr 29, 2026 Oct 10, 2012 N/A· v4 N/A· v3 9.3 HIGH· v2 Use-after-free vulnerability in the DOMSVGTests::GetRequiredFeatures function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey bef...Show more Use-after-free vulnerability in the DOMSVGTests::GetRequiredFeatures function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less
CVE-2012-4182 5Canonical DebianMozilla+2 more 13Debian Linux Enterprise Linux DesktopEnterprise Linux Eus+10 more Apr 29, 2026 Oct 10, 2012 N/A· v4 N/A· v3 9.3 HIGH· v2 Use-after-free vulnerability in the nsTextEditRules::WillInsert function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2...Show more Use-after-free vulnerability in the nsTextEditRules::WillInsert function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less
CVE-2012-4181 3Canonical MozillaRedhat 9Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+6 more Apr 29, 2026 Oct 10, 2012 N/A· v4 N/A· v3 9.3 HIGH· v2 Use-after-free vulnerability in the nsSMILAnimationController::DoSample function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey...Show more Use-after-free vulnerability in the nsSMILAnimationController::DoSample function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less
CVE-2012-4179 5Canonical DebianMozilla+2 more 13Debian Linux Enterprise Linux DesktopEnterprise Linux Eus+10 more Apr 29, 2026 Oct 10, 2012 N/A· v4 N/A· v3 9.3 HIGH· v2 Use-after-free vulnerability in the nsHTMLCSSUtils::CreateCSSPropertyTxn function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey...Show more Use-after-free vulnerability in the nsHTMLCSSUtils::CreateCSSPropertyTxn function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less
CVE-2012-3990 5Canonical DebianMozilla+2 more 13Debian Linux Enterprise Linux DesktopEnterprise Linux Eus+10 more Apr 29, 2026 Oct 10, 2012 N/A· v4 N/A· v3 9.3 HIGH· v2 Use-after-free vulnerability in the IME State Manager implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13...Show more Use-after-free vulnerability in the IME State Manager implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code via unspecified vectors, related to the nsIContent::GetNameSpaceID function.Show less
CVE-2012-3988 4Canonical MozillaRedhat+1 more 12Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+9 more Apr 29, 2026 Oct 10, 2012 N/A· v4 N/A· v3 9.3 HIGH· v2 Use-after-free vulnerability in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 might allow user-assisted remote attacke...Show more Use-after-free vulnerability in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 might allow user-assisted remote attackers to execute arbitrary code via vectors involving use of mozRequestFullScreen to enter full-screen mode, and use of the history.back method for backwards history navigation.Show less
CVE-2012-4969 1Microsoft 1Internet Explorer Apr 21, 2026 Sep 18, 2012 N/A· v4 8.1 HIGH· v3 9.3 HIGH· v2 Use-after-free vulnerability in the CMshtmlEd::Exec function in mshtml.dll in Microsoft Internet Explorer 6 through 9 allows remote attackers to execute arbitrary code via a crafted web site, as exploited in the wild in...Show more Use-after-free vulnerability in the CMshtmlEd::Exec function in mshtml.dll in Microsoft Internet Explorer 6 through 9 allows remote attackers to execute arbitrary code via a crafted web site, as exploited in the wild in September 2012.Show less
CVE-2012-3968 5Canonical MozillaOpensuse+2 more 14Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+11 more Apr 29, 2026 Aug 29, 2012 N/A· v4 N/A· v3 10.0 HIGH· v2 Use-after-free vulnerability in the WebGL implementation in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remot...Show more Use-after-free vulnerability in the WebGL implementation in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code via vectors related to deletion of a fragment shader by its accessor.Show less
CVE-2012-3963 5Canonical MozillaOpensuse+2 more 14Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+11 more Apr 29, 2026 Aug 29, 2012 N/A· v4 N/A· v3 10.0 HIGH· v2 Use-after-free vulnerability in the js::gc::MapAllocToTraceKind function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2...Show more Use-after-free vulnerability in the js::gc::MapAllocToTraceKind function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code via unspecified vectors.Show less
CVE-2012-3961 5Canonical MozillaOpensuse+2 more 14Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+11 more Apr 29, 2026 Aug 29, 2012 N/A· v4 N/A· v3 10.0 HIGH· v2 Use-after-free vulnerability in the RangeData implementation in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows r...Show more Use-after-free vulnerability in the RangeData implementation in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less
CVE-2012-3960 5Canonical MozillaOpensuse+2 more 14Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+11 more Apr 29, 2026 Aug 29, 2012 N/A· v4 N/A· v3 10.0 HIGH· v2 Use-after-free vulnerability in the mozSpellChecker::SetCurrentDictionary function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonke...Show more Use-after-free vulnerability in the mozSpellChecker::SetCurrentDictionary function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less
CVE-2012-3959 6Canonical DebianMozilla+3 more 15Debian Linux Enterprise Linux DesktopEnterprise Linux Eus+12 more Apr 29, 2026 Aug 29, 2012 N/A· v4 N/A· v3 10.0 HIGH· v2 Use-after-free vulnerability in the nsRangeUpdater::SelAdjDeleteNode function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey bef...Show more Use-after-free vulnerability in the nsRangeUpdater::SelAdjDeleteNode function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less
CVE-2012-3956 5Canonical MozillaOpensuse+2 more 14Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+11 more Apr 29, 2026 Aug 29, 2012 N/A· v4 N/A· v3 10.0 HIGH· v2 Use-after-free vulnerability in the MediaStreamGraphThreadRunnable::Run function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey...Show more Use-after-free vulnerability in the MediaStreamGraphThreadRunnable::Run function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less
CVE-2012-1976 5Canonical MozillaOpensuse+2 more 14Enterprise Linux Desktop Enterprise Linux EusEnterprise Linux Server+11 more Apr 29, 2026 Aug 29, 2012 N/A· v4 N/A· v3 10.0 HIGH· v2 Use-after-free vulnerability in the nsHTMLSelectElement::SubmitNamesValues function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonk...Show more Use-after-free vulnerability in the nsHTMLSelectElement::SubmitNamesValues function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less
CVE-2012-1975 6Canonical DebianMozilla+3 more 15Debian Linux Enterprise Linux DesktopEnterprise Linux Eus+12 more Apr 29, 2026 Aug 29, 2012 N/A· v4 N/A· v3 10.0 HIGH· v2 Use-after-free vulnerability in the PresShell::CompleteMove function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12...Show more Use-after-free vulnerability in the PresShell::CompleteMove function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.Show less

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