Is CVE-2025-3608 in the CISA KEV catalog?

No. CVE-2025-3608 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-3608?

CVE-2025-3608 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2025-3608?

CVE-2025-3608 has an EPSS score of 0.29% (21th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-3608?

Upgrade firefox on debian unstable to 137.0.2-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2025-3608

MEDIUM

6.5

CVSS v3

NVD

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.

CWE-362Race Condition

How to fix

Remediation Available

firefoxDebian

Fixed in:137.0.2-1CVE-2025-3608

DeveloperEditionWindows application

Affected:137.0.2Fixed in:137.0.2Mozilla

Mozilla Firefox (en-US)Windows application

Affected:137.0.2Fixed in:137.0.2Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Exploit Intelligence

0.29%probability of exploitation in 30 days

21stpercentile

Low risk: more likely to be exploited than 21% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Third-Party Advisory1

cve.org

Other references1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-362 (Race Condition) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-6387	High	8.1	100%	-	Fix
CVE-2023-36884	High	7.5	99%	KEV + Ransom	Fix
CVE-2018-15473	Medium	5.3	99%	-	Fix
CVE-2024-27983	High	8.2	87%	-	Fix
CVE-2014-0226	Medium	6.8	86%	-	Fix
CVE-2016-5195	High	7.0	84%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-13.