CVE-2026-100761: Vulnerability in Mozilla Firefox
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 157.
AI Analysis
Technical Summary
CVE-2026-100761 is a use-after-free vulnerability in the Graphics: WebGPU component of Mozilla Firefox that enables privilege escalation. The flaw was identified and fixed by Mozilla in Firefox 157. The vendor advisory confirms the fix and categorizes the impact as high. This vulnerability is one of many memory safety issues addressed in the Firefox 157 release, with detailed bug references provided by Mozilla. No active exploitation has been reported.
Potential Impact
Successful exploitation of this use-after-free vulnerability could allow an attacker to escalate privileges within the Firefox process, potentially leading to unauthorized actions or code execution with elevated rights. The vendor rates the impact as high. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox version 157. Users and administrators should update to Firefox 157 or later to remediate this issue. No additional mitigation actions are required beyond applying the official update.
CVE-2026-100761: Vulnerability in Mozilla Firefox
Description
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 157.
CVSS v3.1
Score 8.8high
Affected software
Mozilla
Firefox
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-100761 is a use-after-free vulnerability in the Graphics: WebGPU component of Mozilla Firefox that enables privilege escalation. The flaw was identified and fixed by Mozilla in Firefox 157. The vendor advisory confirms the fix and categorizes the impact as high. This vulnerability is one of many memory safety issues addressed in the Firefox 157 release, with detailed bug references provided by Mozilla. No active exploitation has been reported.
Potential Impact
Successful exploitation of this use-after-free vulnerability could allow an attacker to escalate privileges within the Firefox process, potentially leading to unauthorized actions or code execution with elevated rights. The vendor rates the impact as high. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox version 157. Users and administrators should update to Firefox 157 or later to remediate this issue. No additional mitigation actions are required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-26T19:15:18.342Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/","vendor":"Mozilla"}]
Threat ID: 6abbb3ebf7a7c5410664093f
Added to database: 09/29/2026, 12:49:47 UTC
Last enriched: 09/29/2026, 13:33:53 UTC
Last updated: 09/29/2026, 18:20:13 UTC
Views: 2
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