Executive brief
Mozilla Firefox is a popular web browser used for accessing the internet. A vulnerability in the browser's audio and video processing component could allow a malicious website to cause a crash or potentially execute unauthorized code. This could lead to a loss of service or the compromise of user data if a user visits a specially crafted website.
Technical details
An integer overflow vulnerability was identified in the Audio/Video component of Mozilla Firefox. The flaw occurs during the processing of multimedia content, where improper handling of integer values can lead to memory corruption. An attacker could exploit this by enticing a user to visit a malicious website containing specially crafted audio or video content. Successful exploitation could result in a denial-of-service (browser crash) or potentially arbitrary code execution within the context of the browser process. The vulnerability is mitigated in Firefox version 153.
Affected products
- Mozilla Firefox < 153
Timeline
- 2026-07-21: advisory
- 2026-07-21: patched