CVE-2026-6780
HIGHCVSS 7.5/10EPSS 0.29%
Last modified
CVE-2026-6780 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
Description
Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 150.0 |
| Mozilla | Thunderbird | < 150.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2025179Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-33/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-6780?
Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.
How severe is CVE-2026-6780?
CVE-2026-6780 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.
How do I fix CVE-2026-6780?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-6774Mitigation bypass in the DOM: Security component. This vulne…5.4
- CVE-2026-6775Incorrect boundary conditions in the WebRTC component. This …5.3
- CVE-2026-6776Incorrect boundary conditions in the WebRTC: Networking comp…7.8
- CVE-2026-6777Other issue in the Networking: DNS component. This vulnerabi…5.3
- CVE-2026-6778Invalid pointer in the Audio/Video: Playback component. This…5.3
- CVE-2026-6779Other issue in the JavaScript Engine component. This vulnera…5.3
- CVE-2026-6781Denial-of-service in the Audio/Video: Playback component. Th…7.5
- CVE-2026-6782Information disclosure in the IP Protection component. This …7.5
- CVE-2026-67822Tenda W6-S 1.0.0.4(510) contains a stack-based buffer overfl…9.8
- CVE-2026-6783Incorrect boundary conditions, integer overflow in the Audio…5.3
- CVE-2026-6784Memory safety bugs present in Firefox 149 and Thunderbird 14…7.5
- CVE-2026-6785Memory safety bugs present in Firefox ESR 115.34, Firefox ES…7.5
Are you affected by CVE-2026-6780?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST