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firefox

Vendor: Mozilla • 3,181 CVEs

CVEs (3,181)

CVE
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PUBLISHED
CVSS
2Debian
Mozilla
3Debian Linux
FirefoxThunderbird
Jun 17, 2026
Mar 19, 2024
N/A· v4
8.8 HIGH· v3
N/A· v2
Memory safety bugs present in Firefox 123, Firefox ESR 115.8, and Thunderbird 115.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited...Show more
Memory safety bugs present in Firefox 123, Firefox ESR 115.8, and Thunderbird 115.8. 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 affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.Show less
1Mozilla
1Firefox
Jun 17, 2026
Mar 19, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
Data was not properly sanitized when decoding a QUIC ACK frame; this could have led to unrestricted memory consumption and a crash. This vulnerability affects Firefox < 124.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Mar 19, 2024
N/A· v4
8.1 HIGH· v3
N/A· v2
If an attacker could find a way to trigger a particular code path in `SafeRefPtr`, it could have triggered a crash or potentially be leveraged to achieve code execution. This vulnerability affects Firefox < 124, Firefox...Show more
If an attacker could find a way to trigger a particular code path in `SafeRefPtr`, it could have triggered a crash or potentially be leveraged to achieve code execution. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.Show less
2Debian
Mozilla
3Debian Linux
FirefoxThunderbird
Jun 17, 2026
Mar 19, 2024
N/A· v4
5.5 MEDIUM· v3
N/A· v2
A missing delay on when pointer lock was used could have allowed a malicious page to trick a user into granting permissions. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Mar 19, 2024
N/A· v4
6.1 MEDIUM· v3
N/A· v2
Using a markup injection an attacker could have stolen nonce values. This could have been used to bypass strict content security policies. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird <...Show more
Using a markup injection an attacker could have stolen nonce values. This could have been used to bypass strict content security policies. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.Show less
2Debian
Mozilla
3Debian Linux
FirefoxThunderbird
Jun 17, 2026
Mar 19, 2024
N/A· v4
6.1 MEDIUM· v3
N/A· v2
The permission prompt input delay could expire while the window is not in focus. This makes it vulnerable to clickjacking by malicious websites. This vulnerability affects Firefox < 124, Firefox ESR < 115.10, and Thunder...Show more
The permission prompt input delay could expire while the window is not in focus. This makes it vulnerable to clickjacking by malicious websites. This vulnerability affects Firefox < 124, Firefox ESR < 115.10, and Thunderbird < 115.10.Show less
2Debian
Mozilla
3Debian Linux
FirefoxThunderbird
Jun 17, 2026
Mar 19, 2024
N/A· v4
8.4 HIGH· v3
N/A· v2
`AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding()` and `AppendEncodedCharacters()` could have experienced integer overflows, causing underallocation of an output buffer leading to an out of bounds write....Show more
`AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding()` and `AppendEncodedCharacters()` could have experienced integer overflows, causing underallocation of an output buffer leading to an out of bounds write. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.Show less
2Debian
Mozilla
3Debian Linux
FirefoxThunderbird
Jun 17, 2026
Mar 19, 2024
N/A· v4
8.1 HIGH· v3
N/A· v2
Return registers were overwritten which could have allowed an attacker to execute arbitrary code. *Note:* This issue only affected Armv7-A systems. Other operating systems are unaffected. This vulnerability affects Firef...Show more
Return registers were overwritten which could have allowed an attacker to execute arbitrary code. *Note:* This issue only affected Armv7-A systems. Other operating systems are unaffected. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.Show less
1Mozilla
1Firefox
Jun 17, 2026
Mar 19, 2024
N/A· v4
3.7 LOW· v3
N/A· v2
Passing invalid data could have led to invalid wasm values being created, such as arbitrary integers turning into pointer values. This vulnerability affects Firefox < 124.
1Mozilla
2Firefox
Thunderbird
Jun 17, 2026
Mar 19, 2024
N/A· v4
5.9 MEDIUM· v3
N/A· v2
An attacker could have leveraged the Windows Error Reporter to run arbitrary code on the system escaping the sandbox. *Note:* This issue only affected Windows operating systems. Other operating systems are unaffected. Th...Show more
An attacker could have leveraged the Windows Error Reporter to run arbitrary code on the system escaping the sandbox. *Note:* This issue only affected Windows operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.Show less
2Debian
Mozilla
3Debian Linux
FirefoxThunderbird
Jun 17, 2026
Mar 19, 2024
N/A· v4
6.5 MEDIUM· v3
N/A· v2
NSS was susceptible to a timing side-channel attack when performing RSA decryption. This attack could potentially allow an attacker to recover the private data. This vulnerability affects Firefox < 124, Firefox ESR < 115...Show more
NSS was susceptible to a timing side-channel attack when performing RSA decryption. This attack could potentially allow an attacker to recover the private data. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.Show less
1Mozilla
1Firefox
Jun 17, 2026
Feb 22, 2024
N/A· v4
7.8 HIGH· v3
N/A· v2
An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an external URL with a custom Firefox scheme. This vulnerability affects Firefox for iOS < 123.
1Mozilla
1Firefox
Jun 17, 2026
Feb 22, 2024
N/A· v4
7.1 HIGH· v3
N/A· v2
Using an AMP url with a canonical element, an attacker could have executed JavaScript from an opened bookmarked page. This vulnerability affects Firefox for iOS < 123.
1Mozilla
1Firefox
Jun 17, 2026
Feb 22, 2024
N/A· v4
4.7 MEDIUM· v3
N/A· v2
Upon scanning a JavaScript URI with the QR code scanner, an attacker could have executed unauthorized scripts on the current top origin sites in the URL bar. This vulnerability affects Firefox for iOS < 123.
1Mozilla
1Firefox
Jun 17, 2026
Feb 20, 2024
N/A· v4
8.1 HIGH· v3
N/A· v2
Memory safety bugs present in Firefox 122. 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...Show more
Memory safety bugs present in Firefox 122. 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 affects Firefox < 123.Show less
1Mozilla
1Firefox
Jun 17, 2026
Feb 20, 2024
N/A· v4
6.5 MEDIUM· v3
N/A· v2
The incorrect object was checked for NULL in the built-in profiler, potentially leading to invalid memory access and undefined behavior. *Note:* This issue only affects the application when the profiler is running. This...Show more
The incorrect object was checked for NULL in the built-in profiler, potentially leading to invalid memory access and undefined behavior. *Note:* This issue only affects the application when the profiler is running. This vulnerability affects Firefox < 123.Show less
1Mozilla
1Firefox
Jun 17, 2026
Feb 20, 2024
N/A· v4
8.3 HIGH· v3
N/A· v2
When opening a website using the `firefox://` protocol handler, SameSite cookies were not properly respected. This vulnerability affects Firefox < 123.
1Mozilla
1Firefox
Jun 17, 2026
Feb 20, 2024
N/A· v4
9.8 CRITICAL· v3
N/A· v2
The `fetch()` API and navigation incorrectly shared the same cache, as the cache key did not include the optional headers `fetch()` may contain. Under the correct circumstances, an attacker may have been able to poison...Show more
The `fetch()` API and navigation incorrectly shared the same cache, as the cache key did not include the optional headers `fetch()` may contain. Under the correct circumstances, an attacker may have been able to poison the local browser cache by priming it with a `fetch()` response controlled by the additional headers. Upon navigation to the same URL, the user would see the cached response instead of the expected response. This vulnerability affects Firefox < 123.Show less
2Debian
Mozilla
3Debian Linux
FirefoxThunderbird
Jun 17, 2026
Feb 20, 2024
N/A· v4
8.1 HIGH· v3
N/A· v2
Memory safety bugs present in Firefox 122, Firefox ESR 115.7, and Thunderbird 115.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited...Show more
Memory safety bugs present in Firefox 122, Firefox ESR 115.7, and Thunderbird 115.7. 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 affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.Show less
2Debian
Mozilla
3Debian Linux
FirefoxThunderbird
Jun 17, 2026
Feb 20, 2024
N/A· v4
7.5 HIGH· v3
N/A· v2
Incorrect code generation could have led to unexpected numeric conversions and potential undefined behavior.*Note:* This issue only affects 32-bit ARM devices. This vulnerability affects Firefox < 123, Firefox ESR < 115....Show more
Incorrect code generation could have led to unexpected numeric conversions and potential undefined behavior.*Note:* This issue only affects 32-bit ARM devices. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.Show less