CVE-2026-8972

HIGHNVD 8.86.5▼

8.8

Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

CVSS v3: 8.8
EG Score: 6.5(high)
EPSS: 11.5%
KEV: Not listed

Published

May 19, 2026

Last Modified

May 20, 2026

Advisory Details (3)

Auto-updated May 22, 2026

No patch confirmed yet.

generic

Security Vulnerabilities fixed in Thunderbird 151 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-50/

generic

Security Vulnerabilities fixed in Firefox 151 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-46/

generic

Access Denied

https://bugzilla.mozilla.org/show_bug.cgi?id=2033275

Vendor Advisories for CVE-2026-8972(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-96x7-hrvx-gqj6
GitHub Security AdvisoriesMedium
Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in...

Frequently asked(5)

What is CVE-2026-8972?

CVE-2026-8972 is a high vulnerability published on May 19, 2026. Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

When was CVE-2026-8972 disclosed?

CVE-2026-8972 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on May 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-8972 actively exploited?

CVE-2026-8972 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-8972?

CVE-2026-8972 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.5.

How do I remediate CVE-2026-8972?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8972, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-8972

Explore →

Is Your Infrastructure Affected by CVE-2026-8972?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2026-8972

📅 Published

🔄 Last Modified

📋 Advisory Details (3)

Security Vulnerabilities fixed in Thunderbird 151 — Mozilla

Security Vulnerabilities fixed in Firefox 151 — Mozilla

Access Denied

📣 Vendor Advisories for CVE-2026-8972(1)

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-8972?

Published

Last Modified

Advisory Details (3)

Vendor Advisories for CVE-2026-8972(1)

Frequently asked(5)