CVE-2026-100782: Vulnerability in Mozilla Firefox
Privilege escalation due to incorrect boundary conditions in the Graphics 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 Graphics component of Mozilla Firefox, leading to privilege escalation. It was reported by Mozilla and fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. The vendor advisory confirms the fix and classifies the impact as high. The vulnerability is part of a broader set of security issues addressed in the same advisory.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox process, potentially leading to unauthorized actions or access. The vendor rates the impact as high, indicating significant security implications if exploited.
Mitigation Recommendations
Users and administrators should update affected Firefox installations to Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, or Firefox ESR 140.17 or later. These versions contain the official fix for this vulnerability. No additional mitigation actions are required beyond applying the update.
CVE-2026-100782: Vulnerability in Mozilla Firefox
Description
Privilege escalation due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
CVSS v3.1
Score 8.8high
Affected software
Mozilla
Firefox
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves incorrect boundary conditions in the Graphics component of Mozilla Firefox, leading to privilege escalation. It was reported by Mozilla and fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. The vendor advisory confirms the fix and classifies the impact as high. The vulnerability is part of a broader set of security issues addressed in the same advisory.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to escalate privileges within the Firefox process, potentially leading to unauthorized actions or access. The vendor rates the impact as high, indicating significant security implications if exploited.
Mitigation Recommendations
Users and administrators should update affected Firefox installations to Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, or Firefox ESR 140.17 or later. These versions contain the official fix for this vulnerability. No additional mitigation actions are required beyond applying the update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-26T19:16:58.185Z
- 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: 6abbb3eff7a7c5410664097f
Added to database: 09/29/2026, 12:49:51 UTC
Last enriched: 09/29/2026, 13:32:39 UTC
Last updated: 09/29/2026, 18:20:13 UTC
Views: 2
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