CVE-2026-92052: Vulnerability in Mozilla Firefox
Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
AI Analysis
Technical Summary
This vulnerability involves uninitialized memory usage in the Graphics: CanvasWebGL component of Mozilla Firefox, which can lead to privilege escalation. The flaw was addressed and fixed in Firefox 156 and Firefox ESR 153.3. The Mozilla advisory confirms the high impact severity and provides references to the relevant bug reports. There is no indication of active exploitation in the wild at this time.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox browser environment, potentially leading to unauthorized actions or access. However, no active exploitation has been observed.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 156 and Firefox ESR 153.3. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are required beyond applying the official update.
CVE-2026-92052: Vulnerability in Mozilla Firefox
Description
Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
CVSS v3.1
Score 8.8high
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves uninitialized memory usage in the Graphics: CanvasWebGL component of Mozilla Firefox, which can lead to privilege escalation. The flaw was addressed and fixed in Firefox 156 and Firefox ESR 153.3. The Mozilla advisory confirms the high impact severity and provides references to the relevant bug reports. There is no indication of active exploitation in the wild at this time.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox browser environment, potentially leading to unauthorized actions or access. However, no active exploitation has been observed.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 156 and Firefox ESR 153.3. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation steps are required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-15T12:34:12.921Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/","vendor":"Mozilla"}]
Threat ID: 6aa93e6555bf5e2cf5d31009
Added to database: 09/15/2026, 12:47:33 UTC
Last enriched: 09/15/2026, 13:03:00 UTC
Last updated: 09/16/2026, 03:18:28 UTC
Views: 9
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