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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 (7,934)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
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
CVE-2012-1974 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 gfxTextRun::CanBreakLineBefore 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 befor...Show more Use-after-free vulnerability in the gfxTextRun::CanBreakLineBefore 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-2012-1973 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 nsObjectLoadingContent::LoadObject 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 b...Show more Use-after-free vulnerability in the nsObjectLoadingContent::LoadObject 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-2012-1972 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 nsHTMLEditor::CollapseAdjacentTextNodes 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 SeaMon...Show more Use-after-free vulnerability in the nsHTMLEditor::CollapseAdjacentTextNodes 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-2012-1521 2Apple Google 4Chrome Iphone OsItunes+1 more Apr 29, 2026 May 1, 2012 N/A· v4 N/A· v3 6.8 MEDIUM· v2 Use-after-free vulnerability in the XML parser in Google Chrome before 18.0.1025.168 allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors.
CVE-2011-3081 2Apple Google 4Chrome Iphone OsItunes+1 more Apr 29, 2026 May 1, 2012 N/A· v4 N/A· v3 9.3 HIGH· v2 Use-after-free vulnerability in Google Chrome before 18.0.1025.168 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the floating of elements, a differe...Show more Use-after-free vulnerability in Google Chrome before 18.0.1025.168 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the floating of elements, a different vulnerability than CVE-2011-3078.Show less
CVE-2011-3078 2Apple Google 4Chrome Iphone OsItunes+1 more Apr 29, 2026 May 1, 2012 N/A· v4 N/A· v3 6.8 MEDIUM· v2 Use-after-free vulnerability in Google Chrome before 18.0.1025.168 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the floating of elements, a differe...Show more Use-after-free vulnerability in Google Chrome before 18.0.1025.168 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the floating of elements, a different vulnerability than CVE-2011-3081.Show less
CVE-2012-1180 3Debian F5Fedoraproject 3Debian Linux FedoraNginx Apr 29, 2026 Apr 17, 2012 N/A· v4 N/A· v3 5.0 MEDIUM· v2 Use-after-free vulnerability in nginx before 1.0.14 and 1.1.x before 1.1.17 allows remote HTTP servers to obtain sensitive information from process memory via a crafted backend response, in conjunction with a client requ...Show more Use-after-free vulnerability in nginx before 1.0.14 and 1.1.x before 1.1.17 allows remote HTTP servers to obtain sensitive information from process memory via a crafted backend response, in conjunction with a client request.Show less
CVE-2011-3077 1Google 1Chrome Apr 29, 2026 Apr 5, 2012 N/A· v4 N/A· v3 6.8 MEDIUM· v2 Use-after-free vulnerability in Google Chrome before 18.0.1025.151 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors involving the script bindings, related to a "r...Show more Use-after-free vulnerability in Google Chrome before 18.0.1025.151 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors involving the script bindings, related to a "read-after-free" issue.Show less
CVE-2011-3076 2Apple Google 4Chrome Iphone OsItunes+1 more Apr 29, 2026 Apr 5, 2012 N/A· v4 N/A· v3 6.8 MEDIUM· v2 Use-after-free vulnerability in Google Chrome before 18.0.1025.151 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to focus handling.
CVE-2011-3075 2Apple Google 4Chrome Iphone OsItunes+1 more Apr 29, 2026 Apr 5, 2012 N/A· v4 N/A· v3 6.8 MEDIUM· v2 Use-after-free vulnerability in Google Chrome before 18.0.1025.151 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to style-application commands.
CVE-2011-3074 2Apple Google 4Chrome Iphone OsItunes+1 more Apr 29, 2026 Apr 5, 2012 N/A· v4 N/A· v3 6.8 MEDIUM· v2 Use-after-free vulnerability in Google Chrome before 18.0.1025.151 allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the handling of media.

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