What’s Vulnerable › Vulnerabilities

CVE-2026-3845: Heap buffer overflow in the Audio/Video: Playback component in Firefox for Android

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-10 · updated 2026-06-17
• Weakness: CWE-122

Description

Heap buffer overflow in the Audio/Video: Playback component in Firefox for Android. This vulnerability was fixed in Firefox 148.0.2.

Affected products

• Mozilla Firefox: before 148.0.2 — fixed in 148.0.2

How to fix

Upgrade to a fixed version: Mozilla Firefox 148.0.2. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2020174
• https://www.mozilla.org/security/advisories/mfsa2026-19/

Get alerted when CVE-2026-3845 or the next vulnerability affects your stack