CVE-2026-74948

Analyzed Analyzed - Analysis Complete

Information Disclosure in Firefox Graphics Component

Publication date: 2026-08-18

Last updated on: 2026-08-24

Assigner: Mozilla Corporation

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-18

Last Modified

2026-08-24

Generated

2026-09-07

AI Q&A

2026-08-18

EPSS Evaluated

2026-09-06

NVD

CVE-2026-74948

EUVD

EUVD-2026-60754

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	to 115.39.0 (exc)
mozilla	firefox	From 116.0 (inc) to 140.14.0 (exc)
mozilla	firefox	From 141.0 (inc) to 153.1.0 (exc)
mozilla	thunderbird	From 141.0 (inc) to 153.1.0 (exc)
mozilla	thunderbird	to 140.14.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This is an information disclosure vulnerability in Firefox's Graphics component. It allows unauthorized access to sensitive data through the graphics rendering process. The issue was patched in Firefox 154 and multiple Firefox ESR versions.

Detection Guidance

This vulnerability is fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1. Check your Firefox version with 'firefox --version' or 'about:support' in Firefox. If your version is below these, the system is vulnerable.

Impact Analysis

Attackers could exploit this to steal sensitive information displayed or processed by the browser's graphics system, such as images, text, or other rendered content. Users of affected Firefox versions may have their data exposed.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, potentially violating GDPR's data protection requirements or HIPAA's safeguards for protected health information. Organizations must ensure patched versions are deployed to maintain compliance.

Mitigation Strategies

Update Firefox to version 154 or later, Firefox ESR 115.39 or later, Firefox ESR 140.14 or later, or Firefox ESR 153.1 or later. Disable automatic updates temporarily if needed, but prioritize updating to the patched versions.

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