CVE-2026-16357

Analyzed Analyzed - Analysis Complete

Graphics Component Boundary Condition Error in Firefox

Publication date: 2026-07-21

Last updated on: 2026-07-24

Assigner: Mozilla Corporation

Description

Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-21

Last Modified

2026-07-24

Generated

2026-08-11

AI Q&A

2026-07-21

EPSS Evaluated

2026-08-09

NVD

CVE-2026-16357

EUVD

EUVD-2026-46205

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	to 153.0.0 (exc)
mozilla	firefox	to 115.38.0 (exc)
mozilla	firefox	From 128.1.0 (inc) to 140.13.0 (exc)
mozilla	thunderbird	to 140.13.0 (exc)
mozilla	thunderbird	From 141.0 (inc) to 153.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-119	The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Attack-Flow Graph

Executive Summary

This is a boundary condition error in Firefox's Graphics component. It could allow improper memory handling during graphics operations, potentially leading to crashes or unexpected behavior.

Detection Guidance

Detection requires checking Firefox version against patched releases. For Firefox, run: firefox --version. For ESR versions, check: firefox --version | grep ESR. Affected versions are below Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

Impact Analysis

An attacker could exploit this to cause crashes, execute arbitrary code, or gain unauthorized access to system resources through crafted graphics operations.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The description only mentions incorrect boundary conditions in the Graphics component without detailing potential data exposure or privacy implications.

Mitigation Strategies

Update Firefox to version 153 or later, Firefox ESR to version 115.38 or later, or Firefox ESR to version 140.13 or later to address the Graphics component boundary condition issue.

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