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Thunderbird

thunderbird

Vendor: Mozilla • 1,773 CVEs

CVEs (1,773)

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1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Feb 4, 2025
N/A· v4
6.5 MEDIUM· v3
N/A· v2
A race condition could have led to private browsing tabs being opened in normal browsing windows. This could have resulted in a potential privacy leak. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thun...Show more
A race condition could have led to private browsing tabs being opened in normal browsing windows. This could have resulted in a potential privacy leak. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Feb 4, 2025
N/A· v4
7.5 HIGH· v3
N/A· v2
A race during concurrent delazification could have led to a use-after-free. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Feb 4, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
A bug in WebAssembly code generation could have lead to a crash. It may have been possible for an attacker to leverage this to achieve code execution. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thund...Show more
A bug in WebAssembly code generation could have lead to a crash. It may have been possible for an attacker to leverage this to achieve code execution. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Feb 4, 2025
N/A· v4
8.8 HIGH· v3
N/A· v2
An attacker could have caused a use-after-free via the Custom Highlight API, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128...Show more
An attacker could have caused a use-after-free via the Custom Highlight API, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Feb 4, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and...Show more
An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.Show less
1Mozilla
1Thunderbird
Jun 17, 2026
Feb 4, 2025
N/A· v4
6.5 MEDIUM· v3
N/A· v2
Thunderbird displayed an incorrect sender address if the From field of an email used the invalid group name syntax that is described in CVE-2024-49040. This vulnerability was fixed in Thunderbird 128.7 and Thunderbird 13...Show more
Thunderbird displayed an incorrect sender address if the From field of an email used the invalid group name syntax that is described in CVE-2024-49040. This vulnerability was fixed in Thunderbird 128.7 and Thunderbird 135.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jan 7, 2025
N/A· v4
9.8 CRITICAL· v3
N/A· v2
Memory safety bugs present in Firefox 133 and Thunderbird 133. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code....Show more
Memory safety bugs present in Firefox 133 and Thunderbird 133. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 134 and Thunderbird 134.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jan 7, 2025
N/A· v4
5.1 MEDIUM· v3
N/A· v2
Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could hav...Show more
Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jan 7, 2025
N/A· v4
6.5 MEDIUM· v3
N/A· v2
Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we presume that wi...Show more
Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18, and Thunderbird 128.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Firefox ESR 115.19, Thunderbird 134, and Thunderbird 128.6.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jan 7, 2025
N/A· v4
7.7 HIGH· v3
N/A· v2
When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6...Show more
When segmenting specially crafted text, segmentation would corrupt memory leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jan 7, 2025
N/A· v4
4.0 MEDIUM· v3
N/A· v2
Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134,...Show more
Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jan 7, 2025
N/A· v4
4.0 MEDIUM· v3
N/A· v2
When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbir...Show more
When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jan 7, 2025
N/A· v4
5.3 MEDIUM· v3
N/A· v2
Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Firefox ESR 115....Show more
Assuming a controlled failed memory allocation, an attacker could have caused a use-after-free, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Firefox ESR 115.19, Thunderbird 134, and Thunderbird 128.6.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Jan 7, 2025
N/A· v4
5.4 MEDIUM· v3
N/A· v2
The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks....Show more
The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Nov 26, 2024
N/A· v4
6.5 MEDIUM· v3
N/A· v2
Missing thread synchronization primitives could have led to a data race on members of the PlaybackParams structure. This vulnerability affects Firefox < 133 and Thunderbird < 133.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Nov 26, 2024
N/A· v4
6.5 MEDIUM· v3
N/A· v2
A null pointer dereference may have inadvertently occurred in `pk12util`, and specifically in the `SEC_ASN1DecodeItem_Util` function, when handling malformed or improperly formatted input files. This vulnerability affect...Show more
A null pointer dereference may have inadvertently occurred in `pk12util`, and specifically in the `SEC_ASN1DecodeItem_Util` function, when handling malformed or improperly formatted input files. This vulnerability affects Firefox < 133 and Thunderbird < 133.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Nov 26, 2024
N/A· v4
9.1 CRITICAL· v3
N/A· v2
`NSC_DeriveKey` inadvertently assumed that the `phKey` parameter is always non-NULL. When it was passed as NULL, a segmentation fault (SEGV) occurred, leading to crashes. This behavior conflicted with the PKCS#11 v3.0 sp...Show more
`NSC_DeriveKey` inadvertently assumed that the `phKey` parameter is always non-NULL. When it was passed as NULL, a segmentation fault (SEGV) occurred, leading to crashes. This behavior conflicted with the PKCS#11 v3.0 specification, which allows `phKey` to be NULL for certain mechanisms. This vulnerability affects Firefox < 133 and Thunderbird < 133.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Nov 26, 2024
N/A· v4
9.8 CRITICAL· v3
N/A· v2
A double-free issue could have occurred in `sec_pkcs7_decoder_start_decrypt()` when handling an error path. Under specific conditions, the same symmetric key could have been freed twice, potentially leading to memory cor...Show more
A double-free issue could have occurred in `sec_pkcs7_decoder_start_decrypt()` when handling an error path. Under specific conditions, the same symmetric key could have been freed twice, potentially leading to memory corruption. This vulnerability affects Firefox < 133, Thunderbird < 133, Firefox ESR < 128.7, and Thunderbird < 128.7.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Nov 26, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
Copying sensitive information from Private Browsing tabs on Android, such as passwords, may have inadvertently stored data in the cloud-based clipboard history if enabled. This vulnerability affects Firefox < 133 and Thu...Show more
Copying sensitive information from Private Browsing tabs on Android, such as passwords, may have inadvertently stored data in the cloud-based clipboard history if enabled. This vulnerability affects Firefox < 133 and Thunderbird < 133.Show less
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Nov 26, 2024
N/A· v4
4.3 MEDIUM· v3
N/A· v2
The incorrect domain may have been displayed in the address bar during an interrupted navigation attempt. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 133 and...Show more
The incorrect domain may have been displayed in the address bar during an interrupted navigation attempt. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 133 and Thunderbird < 133.Show less