CVE-2026-74948: Vulnerability in Mozilla Firefox
Information disclosure in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
AI Analysis
Technical Summary
CVE-2026-74948 is an information disclosure vulnerability affecting the Graphics component of Mozilla Firefox. It was identified and reported by Yaqoub Aldurayhim and fixed in Firefox 154 and Firefox ESR 115.39, 140.14, and 153.1. This vulnerability is one among multiple high-impact security issues resolved in these releases. The flaw could potentially allow unauthorized disclosure of information within the graphics subsystem. Mozilla has published multiple security advisories detailing this and related vulnerabilities, emphasizing the importance of applying the official fixes.
Potential Impact
The vulnerability allows information disclosure within the Graphics component of Firefox, which could lead to unauthorized access to sensitive information processed or rendered by the browser. The impact is rated high by Mozilla. There are no known exploits in the wild at this time.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 154 and Firefox ESR versions 115.39, 140.14, and 153.1. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation actions are required beyond applying the official updates.
CVE-2026-74948: Vulnerability in Mozilla Firefox
Description
Information disclosure in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Affected software
pkg:github/mozilla/firefox-esrRun 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
CVE-2026-74948 is an information disclosure vulnerability affecting the Graphics component of Mozilla Firefox. It was identified and reported by Yaqoub Aldurayhim and fixed in Firefox 154 and Firefox ESR 115.39, 140.14, and 153.1. This vulnerability is one among multiple high-impact security issues resolved in these releases. The flaw could potentially allow unauthorized disclosure of information within the graphics subsystem. Mozilla has published multiple security advisories detailing this and related vulnerabilities, emphasizing the importance of applying the official fixes.
Potential Impact
The vulnerability allows information disclosure within the Graphics component of Firefox, which could lead to unauthorized access to sensitive information processed or rendered by the browser. The impact is rated high by Mozilla. There are no known exploits in the wild at this time.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 154 and Firefox ESR versions 115.39, 140.14, and 153.1. Users and administrators should update to these versions or later to remediate the issue. No additional mitigation actions are required beyond applying the official updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-08-17T11:57:55.121Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-74/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-75/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-76/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-77/","vendor":"Mozilla"}]
Threat ID: 6a845504c6e8be03323673c3
Added to database: 08/18/2026, 12:50:12 UTC
Last enriched: 08/18/2026, 13:55:48 UTC
Last updated: 08/19/2026, 01:27:42 UTC
Views: 4
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