CVE-2026-16408

Modified Modified - Updated After Analysis

Integer Overflow in Firefox Audio/Video Playback

Publication date: 2026-07-21

Last updated on: 2026-07-22

Assigner: Mozilla Corporation

Description

Integer overflow in the Audio/Video: Playback 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-2026-16408

EUVD

EUVD-2026-46246

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 Firefox's Audio/Video Playback component. An integer overflow occurs when a calculation exceeds the maximum value an integer can hold, potentially causing unexpected behavior or crashes.

Detection Guidance

Detection requires checking Firefox version. Run 'firefox --version' to verify if it is below 153. If so, the system is vulnerable.

Impact Analysis

An attacker could exploit this to cause crashes, execute arbitrary code, or bypass security mechanisms in Firefox. Users running vulnerable versions may face system instability or security risks.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The description only mentions an integer overflow in Firefox's Audio/Video Playback component, fixed in Firefox 153.

Mitigation Strategies

Update Firefox to version 153 or later immediately. Disable automatic media playback in Firefox settings if an update is not immediately available.

Hi! I’m here to help you understand CVE-2026-16408. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70