Privilege Escalation in WebRTC: Affected Firefox by Mozilla
CVE-2026-8972

8.8HIGH

Key Information:

Vendor

Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
19 May 2026

What is CVE-2026-8972?

A privilege escalation vulnerability exists in the WebRTC component of Firefox, potentially allowing attackers to gain unauthorized access to system resources. This issue was resolved in Firefox version 151, emphasizing the importance of keeping browsers updated to mitigate security risks.

Affected Version(s)

Firefox 151

Thunderbird 151

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2033275
https://www.mozilla.org/security/advisories/mfsa2026-46/
https://www.mozilla.org/security/advisories/mfsa2026-50/

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

pakhunov.anton.n
.