CVE-2026-16395

Modified Modified - Updated After Analysis

Integer Overflow in Firefox Audio/Video Component

Publication date: 2026-07-21

Last updated on: 2026-07-22

Assigner: Mozilla Corporation

Description

Integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-21

Last Modified

2026-07-22

Generated

2026-08-10

AI Q&A

2026-07-21

EPSS Evaluated

2026-08-09

NVD

CVE-2026-16395

EUVD

EUVD-2026-46233

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	to 153.0.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-190	The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

Executive Summary

This is an integer overflow vulnerability in the Audio/Video component of Firefox. 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 a crash or execute arbitrary code in the context of the affected application. This could lead to denial of service or potentially allow unauthorized access to sensitive data if combined with other vulnerabilities.

Compliance Impact

This vulnerability does not provide specific details about compliance impacts on standards like GDPR or HIPAA. The CVE describes an integer overflow in Firefox's Audio/Video component, which could lead to arbitrary code execution or denial of service. Such vulnerabilities may affect compliance if they result in unauthorized data access or processing disruptions, but no direct evidence is provided here.

Mitigation Strategies

Update Firefox to version 153 or later to address the integer overflow vulnerability in the Audio/Video component.

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