CVE-2025-3608 Race condition in nsHttpTransaction could lead to memory corruption

What is CVE-2025-3608?

CVE-2025-3608 is a medium-severity vulnerability in Mozilla Firefox, published on 15 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A race condition existed in nsHttpTransaction that could have been exploited to cause memory corruption, potentially leading to an exploitable condition. This vulnerability was fixed in Firefox 137.0.2.

Weakness: CWE-362

Which versions are affected by CVE-2025-3608?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2025-3608?

Upgrade to a fixed version.

Is CVE-2025-3608 being exploited?

There is no known exploitation of CVE-2025-3608 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6rrc-vwrv-cwxc, UBUNTU-CVE-2025-3608, openSUSE-SU-2025:15005-1.