CVE-2026-8091: Vulnerability in Mozilla Firefox
CVE-2026-8091 is a vulnerability in Mozilla Firefox's Audio/Video Playback component caused by incorrect boundary conditions. This issue was addressed and fixed in Firefox ESR versions 140. 10. 2 and 115. 35. 2. The vulnerability is categorized as a memory safety bug with potential for memory corruption, which could be exploited to run arbitrary code with sufficient effort. Mozilla has released official patches resolving this issue in the specified ESR versions. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-8091 involves incorrect boundary conditions in the Audio/Video Playback component of Mozilla Firefox, leading to memory safety issues. This vulnerability was fixed in Firefox ESR 140.10.2 and Firefox ESR 115.35.2. The Mozilla advisories indicate that this bug is part of a set of memory safety bugs that showed evidence of memory corruption and could potentially be exploited for arbitrary code execution. The fixes are included in the ESR releases mentioned, and the vulnerability has been publicly disclosed with high impact classification by Mozilla.
Potential Impact
The vulnerability can lead to memory corruption in the Audio/Video Playback component, which may allow an attacker to execute arbitrary code if exploited. Mozilla classifies the impact as high. No active exploitation has been reported. The issue affects Firefox ESR versions prior to 140.10.2 and 115.35.2.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox ESR 140.10.2 and Firefox ESR 115.35.2. Users and administrators should update to these versions or later to remediate the issue. Since the vulnerability is fixed in these ESR releases, no additional mitigation steps are required beyond applying the official patches.
CVE-2026-8091: Vulnerability in Mozilla Firefox
Description
CVE-2026-8091 is a vulnerability in Mozilla Firefox's Audio/Video Playback component caused by incorrect boundary conditions. This issue was addressed and fixed in Firefox ESR versions 140. 10. 2 and 115. 35. 2. The vulnerability is categorized as a memory safety bug with potential for memory corruption, which could be exploited to run arbitrary code with sufficient effort. Mozilla has released official patches resolving this issue in the specified ESR versions. There are no known exploits in the wild at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8091 involves incorrect boundary conditions in the Audio/Video Playback component of Mozilla Firefox, leading to memory safety issues. This vulnerability was fixed in Firefox ESR 140.10.2 and Firefox ESR 115.35.2. The Mozilla advisories indicate that this bug is part of a set of memory safety bugs that showed evidence of memory corruption and could potentially be exploited for arbitrary code execution. The fixes are included in the ESR releases mentioned, and the vulnerability has been publicly disclosed with high impact classification by Mozilla.
Potential Impact
The vulnerability can lead to memory corruption in the Audio/Video Playback component, which may allow an attacker to execute arbitrary code if exploited. Mozilla classifies the impact as high. No active exploitation has been reported. The issue affects Firefox ESR versions prior to 140.10.2 and 115.35.2.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox ESR 140.10.2 and Firefox ESR 115.35.2. Users and administrators should update to these versions or later to remediate the issue. Since the vulnerability is fixed in these ESR releases, no additional mitigation steps are required beyond applying the official patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-05-07T12:45:05.120Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-41/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-42/","vendor":"Mozilla"}]
Threat ID: 69fc8e61cbff5d8610ef2cba
Added to database: 5/7/2026, 1:06:41 PM
Last enriched: 5/7/2026, 1:22:08 PM
Last updated: 5/7/2026, 2:16:18 PM
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.