CVE-2026-74977
Undergoing Analysis Undergoing Analysis - In Progress

Integer Overflow in Firefox Graphics Component

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Mozilla Corporation

Description
Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.

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Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-18
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-74977
EUVD
EUVD-2026-60690

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mozilla firefox to 154 (inc)
mozilla firefox_esr to 153.1 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is an integer overflow in Firefox's Graphics component. An integer overflow occurs when a calculation produces a result larger than the maximum value that can be stored in the variable's data type, potentially leading to unexpected behavior or crashes.

Impact Analysis

An attacker could exploit this to cause application crashes or execute arbitrary code, potentially leading to data loss or unauthorized system access. Users running vulnerable Firefox versions are at risk.

Mitigation Strategies

Update Firefox to version 154 or Firefox ESR to version 153.1 or later to address the integer overflow in the Graphics component.

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