Mozilla: >> Firefox >> 10.0.1 Security Vulnerabilities
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVSS Score
7.3
EPSS Score
0.003
Published
2026-04-21
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVSS Score
7.5
EPSS Score
0.004
Published
2026-04-21
Mitigation bypass in the DOM: postMessage component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVSS Score
6.5
EPSS Score
0.002
Published
2026-04-21
Mitigation bypass in Firefox for Android. This vulnerability was fixed in Firefox 150.
CVSS Score
7.5
EPSS Score
0.002
Published
2026-04-21
Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVSS Score
6.3
EPSS Score
0.002
Published
2026-04-21
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVSS Score
7.5
EPSS Score
0.004
Published
2026-04-21
Use-after-free in the Widget: Cocoa component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVSS Score
7.5
EPSS Score
0.004
Published
2026-04-21
Mitigation bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
CVSS Score
9.8
EPSS Score
0.003
Published
2026-04-21
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVSS Score
7.5
EPSS Score
0.005
Published
2026-04-21
Use-after-free in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVSS Score
7.5
EPSS Score
0.004
Published
2026-04-21