CVE-2026-92051

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Graphics Component Spoofing via Invalid Pointer in Firefox

Publication date: 2026-09-15

Last updated on: 2026-10-05

Assigner: Mozilla Corporation

Description

Spoofing issue due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-15

Last Modified

2026-10-05

Generated

2026-10-05

AI Q&A

2026-09-15

EPSS Evaluated

2026-10-04

NVD

CVE-2026-92051

EUVD

EUVD-2026-78514

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	to 156.0.0 (exc)
mozilla	thunderbird	to 156.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-476	The product dereferences a pointer that it expects to be valid but is NULL.

Attack-Flow Graph

Executive Summary

This is a spoofing vulnerability caused by an invalid pointer in the Graphics component of Firefox. It was patched in Firefox version 156.

Detection Guidance

This vulnerability is specific to Firefox versions before 156. To detect it, check your Firefox version with the command: firefox --version. If the version is below 156, the system is vulnerable. Update Firefox to version 156 or later to mitigate the issue.

Impact Analysis

An attacker could exploit this to trick users into viewing malicious content by spoofing legitimate interfaces or data.

Compliance Impact

The provided CVE data does not include details about compliance impacts on standards like GDPR or HIPAA. Without specific information on data exposure or processing risks, it is unclear how this vulnerability affects compliance.

Mitigation Strategies

Update Firefox to version 156 or later to address the invalid pointer issue in the Graphics component.

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