CVE-2026-74948: Vulnerability in Mozilla Firefox
CVE-2026-74948 is an information disclosure vulnerability in the Graphics component of Mozilla Firefox. It was addressed and fixed in Firefox 154 and Firefox ESR versions 115.39, 140.14, and 153.1, as well as corresponding Thunderbird versions. The vulnerability has a medium severity rating with a CVSS score of 6.5. The vendor advisory confirms the fix is available in these versions.
AI Analysis
Technical Summary
CVE-2026-74948 is an information disclosure vulnerability affecting the Graphics component in Mozilla Firefox. This vulnerability allows unauthorized disclosure of information but does not impact integrity or availability. It was fixed in Firefox 154, Firefox ESR 115.39, 140.14, and 153.1. The Mozilla advisories confirm the fix and provide detailed references to the underlying bugs. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality impact.
Potential Impact
Successful exploitation of this vulnerability could lead to unauthorized disclosure of sensitive information from the Graphics component in Firefox. The impact is limited to confidentiality with no direct impact on integrity or availability. There are no known exploits in the wild as per the provided data.
Mitigation Recommendations
A fix is available and users should upgrade to Firefox 154 or Firefox ESR versions 115.39, 140.14, or 153.1 to remediate this vulnerability. The vendor advisory explicitly states these versions contain the patches. No additional mitigation steps are required beyond applying these updates.
CVE-2026-74948: Vulnerability in Mozilla Firefox
Description
CVE-2026-74948 is an information disclosure vulnerability in the Graphics component of Mozilla Firefox. It was addressed and fixed in Firefox 154 and Firefox ESR versions 115.39, 140.14, and 153.1, as well as corresponding Thunderbird versions. The vulnerability has a medium severity rating with a CVSS score of 6.5. The vendor advisory confirms the fix is available in these versions.
CVSS v3.1
Score 6.5medium
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
pkg:github/mozilla/firefox-esrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-74948 is an information disclosure vulnerability affecting the Graphics component in Mozilla Firefox. This vulnerability allows unauthorized disclosure of information but does not impact integrity or availability. It was fixed in Firefox 154, Firefox ESR 115.39, 140.14, and 153.1. The Mozilla advisories confirm the fix and provide detailed references to the underlying bugs. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality impact.
Potential Impact
Successful exploitation of this vulnerability could lead to unauthorized disclosure of sensitive information from the Graphics component in Firefox. The impact is limited to confidentiality with no direct impact on integrity or availability. There are no known exploits in the wild as per the provided data.
Mitigation Recommendations
A fix is available and users should upgrade to Firefox 154 or Firefox ESR versions 115.39, 140.14, or 153.1 to remediate this vulnerability. The vendor advisory explicitly states these versions contain the patches. No additional mitigation steps are required beyond applying these updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-08-17T11:57:55.121Z
- State
- PUBLISHED
- 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: 09/11/2026, 22:03:02 UTC
Last updated: 10/02/2026, 02:46:06 UTC
Views: 55
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