← Back

Firefox

firefox

Vendor: Mozilla • 3,269 CVEs

CVEs (3,269)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Mozilla
1Firefox
Apr 29, 2026
Aug 29, 2012
N/A· v4
N/A· v3
9.3 HIGH· v2
Mozilla Firefox before 15.0 does not properly restrict navigation to the about:newtab page, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted web site that triggers c...Show more
Mozilla Firefox before 15.0 does not properly restrict navigation to the about:newtab page, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted web site that triggers creation of a new tab and then a new window.Show less
1Mozilla
4Firefox
SeamonkeyThunderbird+1 more
Apr 29, 2026
Aug 29, 2012
N/A· v4
N/A· v3
10.0 HIGH· v2
Use-after-free vulnerability in the gfxTextRun::GetUserData 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 gfxTextRun::GetUserData 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
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
1Mozilla
4Firefox
SeamonkeyThunderbird+1 more
Apr 29, 2026
Aug 29, 2012
N/A· v4
N/A· v3
9.3 HIGH· v2
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 do not properly iterate through the characters in a text run, which allo...Show more
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 do not properly iterate through the characters in a text run, which allows remote attackers to execute arbitrary code via a crafted document.Show less
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
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
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
1Mozilla
4Firefox
SeamonkeyThunderbird+1 more
Apr 29, 2026
Aug 29, 2012
N/A· v4
N/A· v3
10.0 HIGH· v2
Use-after-free vulnerability in the nsHTMLEditRules::DeleteNonTableElements 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 nsHTMLEditRules::DeleteNonTableElements 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
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
Heap-based buffer overflow in the nsBlockFrame::MarkLineDirty 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 2.1...Show more
Heap-based buffer overflow in the nsBlockFrame::MarkLineDirty 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
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
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
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
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
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
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
1Mozilla
3Firefox
SeamonkeyThunderbird
Apr 29, 2026
Aug 29, 2012
N/A· v4
N/A· v3
9.3 HIGH· v2
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 allow remote attackers to cause a denial of service (memory corruption and app...Show more
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to garbage collection after certain MethodJIT execution, and unknown other vectors.Show less
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
Multiple unspecified vulnerabilities in the browser engine 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 allow remo...Show more
Multiple unspecified vulnerabilities in the browser engine 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 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.Show less
1Mozilla
3Firefox
SeamonkeyThunderbird
Apr 29, 2026
Aug 29, 2012
N/A· v4
N/A· v3
4.3 MEDIUM· v2
Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote...Show more
Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a plugin.Show less
1Mozilla
4Firefox
SeamonkeyThunderbird+1 more
Apr 29, 2026
Jul 18, 2012
N/A· v4
N/A· v3
10.0 HIGH· v2
Mozilla Firefox 4.x through 13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 13.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.11 do not properly implement the JavaScript sandbox utility, whic...Show more
Mozilla Firefox 4.x through 13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 13.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.11 do not properly implement the JavaScript sandbox utility, which allows remote attackers to execute arbitrary JavaScript code with improper privileges via a javascript: URL.Show less
1Mozilla
1Firefox
Apr 29, 2026
Jul 18, 2012
N/A· v4
N/A· v3
4.3 MEDIUM· v2
Mozilla Firefox 4.x through 13.0 and Firefox ESR 10.x before 10.0.6 do not have the same context-menu restrictions for data: URLs as for javascript: URLs, which allows remote attackers to conduct cross-site scripting (XS...Show more
Mozilla Firefox 4.x through 13.0 and Firefox ESR 10.x before 10.0.6 do not have the same context-menu restrictions for data: URLs as for javascript: URLs, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted URL.Show less