CVE-2025-3608

low-risk

Published 2025-04-15

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.

Do I need to act?

0.18% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.5/10 Medium

NETWORK / HIGH complexity

Affected Products (1)

Firefox

Affected Vendors

Mozilla

References (3)

Permissions Required https://bugzilla.mozilla.org/show_bug.cgi?id=1951554

Third Party Advisory https://www.cve.org/CVERecord?id=CVE-2025-3608

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2025-25/

/ 100

low-risk

Severity 20/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal