Vulnerability · CVE-2026-8968
Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component.
Published May 19, 2026 · catalog updated Jul 23, 2026 · Denial-of-service due to invalid
Check if you run it
No confirmed exploitation is on record for CVE-2026-8968. EPSS is 0.53%. Act only if a listed version of Denial-of-service due to invalid is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (Denial-of-service due to invalid).
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- High7.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.53%
- Remediation
- Advisory link
- Affected products
- cpe mozilla/firefox · cpe mozilla/thunderbird
Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe mozilla/firefoxversion unspecified
- cpe mozilla/thunderbirdversion unspecified
How to fix CVE-2026-8968
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-8968. EPSS is 0.53%. Act only if a listed version of Denial-of-service due to invalid is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-400: Uncontrolled Resource Consumption. EPSS 0.53%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
May 19, 2026 · NIST NVD
Detected
Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Jul 23, 2026 · NIST NVD
Updated
Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
Sources
- CVE.orgVulnerability recordCVE-2026-8968
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-8968
30-day exploitation probability 0.5%
first.org - NIST NVDVulnerability recordCVE-2026-8968
Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.