CVE-2026-100756: Vulnerability in Mozilla Firefox
Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
AI Analysis
Technical Summary
This vulnerability involves incorrect boundary conditions in the Audio/Video playback component of Mozilla Firefox. Such boundary condition errors can lead to memory safety issues or other unexpected behaviors. Mozilla fixed this vulnerability in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. The advisory classifies the impact as high but does not provide detailed exploitation scenarios. No active exploitation has been reported.
Potential Impact
The vulnerability has a high impact rating according to Mozilla, indicating it could lead to significant security issues if exploited. However, no known exploits in the wild have been reported. The flaw affects the Audio/Video playback component, which could potentially allow attackers to cause crashes or other adverse effects related to media playback.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-100756: Vulnerability in Mozilla Firefox
Description
Incorrect boundary conditions in the Audio/Video: Playback component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Affected software
Mozilla
Firefox
pkg:github/mozilla/firefoxRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves incorrect boundary conditions in the Audio/Video playback component of Mozilla Firefox. Such boundary condition errors can lead to memory safety issues or other unexpected behaviors. Mozilla fixed this vulnerability in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. The advisory classifies the impact as high but does not provide detailed exploitation scenarios. No active exploitation has been reported.
Potential Impact
The vulnerability has a high impact rating according to Mozilla, indicating it could lead to significant security issues if exploited. However, no known exploits in the wild have been reported. The flaw affects the Audio/Video playback component, which could potentially allow attackers to cause crashes or other adverse effects related to media playback.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-26T19:15:13.788Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-100/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-98/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-99/","vendor":"Mozilla"}]
Threat ID: 6abbb3ebf7a7c5410664093a
Added to database: 09/29/2026, 12:49:47 UTC
Last enriched: 09/29/2026, 13:48:17 UTC
Last updated: 09/29/2026, 18:20:13 UTC
Views: 2
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