Mozilla: >> Firefox >> 128.11.0 Security Vulnerabilities
In certain cases, SNI could have been sent unencrypted even when encrypted DNS was enabled. This vulnerability affects Firefox < 139 and Thunderbird < 139.
CVSS Score
7.5
EPSS Score
0.0
Published
2025-05-27
Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks. This vulnerability affects Firefox < 139 and Thunderbird < 139.
CVSS Score
6.5
EPSS Score
0.001
Published
2025-05-27
A race condition existed in nsHttpTransaction that could have been exploited to cause memory corruption, potentially leading to an exploitable condition. This vulnerability affects Firefox < 137.0.2.
CVSS Score
6.5
EPSS Score
0.0
Published
2025-04-15
An attacker could read 32 bits of values spilled onto the stack in a JIT compiled function. This vulnerability affects Firefox < 137 and Thunderbird < 137.
CVSS Score
6.5
EPSS Score
0.0
Published
2025-04-01
Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks. This vulnerability affects Firefox < 137 and Thunderbird < 137.
CVSS Score
7.4
EPSS Score
0.0
Published
2025-04-01
After selecting a malicious Windows `.url` shortcut from the local filesystem, an unexpected file could be uploaded.
*This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 137 and Thunderbird < 137.
CVSS Score
7.7
EPSS Score
0.0
Published
2025-04-01
Memory safety bugs present in Firefox 136 and Thunderbird 136. 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 < 137 and Thunderbird < 137.
CVSS Score
8.1
EPSS Score
0.0
Published
2025-04-01
Under certain circumstances, a user opt-in setting that Focus should require authentication before use could have been be bypassed (distinct from CVE-2025-0245). This vulnerability affects Firefox < 136.
CVSS Score
9.1
EPSS Score
0.002
Published
2025-03-04
When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string This vulnerability affects Firefox < 136 and Thunderbird < 136.
CVSS Score
9.8
EPSS Score
0.002
Published
2025-03-04
Memory safety bugs present in Firefox 135 and Thunderbird 135. 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 < 136 and Thunderbird < 136.
CVSS Score
8.2
EPSS Score
0.001
Published
2025-03-04