CVE-2026-8094
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk37th percentile - higher than 37% of all known CVEs
Summary
An unspecified vulnerability was found in the WebRTC component of Firefox and Thunderbird. The flaw was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2.
Risk Assessment
The vulnerability could allow an attacker to execute arbitrary code or compromise data confidentiality during WebRTC communications, posing a risk to user security.
Recommendation
Immediately update Firefox ESR to version 140.10.2 or later and Thunderbird to version 140.10.2 or later.
Other vulnerabilities in WebRTC
See all- CVE-2026-2757Critical
A vulnerability in the WebRTC: Audio/Video component of Firefox and Thunderbird due to incorrect boundary conditions. The flaw is fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
- CVE-2026-6753High
Incorrect boundary conditions were found in the WebRTC component of Firefox and Thunderbird, potentially leading to unexpected behavior. The vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
- CVE-2026-6752High
A vulnerability in the WebRTC component of Firefox and Thunderbird is caused by incorrect boundary conditions. The flaw was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
- CVE-2026-6747High
A use-after-free vulnerability was found in the WebRTC component of Firefox and Thunderbird. The flaw was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Original NVD description (English source)
Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS