How severe is CVE-2025-63938?

CVE-2025-63938 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-63938 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63938?

CVE-2025-63938 affects Tinyproxy Project Tinyproxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63938?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-63938 have an EU (EUVD) identifier?

Yes. CVE-2025-63938 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199723.

When was CVE-2025-63938 published?

CVE-2025-63938 was published on 2025-11-26 and last updated on 2026-06-17.

CVE-2025-63938

CVE-2025-63938 is a medium-severity vulnerability in Tinyproxy Project Tinyproxy with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199723
Weakness: CWE-190
Affected product: Tinyproxy Project Tinyproxy
Published: 2025-11-26
Last modified: 2026-06-17

Description

Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.

Frequently asked questions

What is CVE-2025-63938?: Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.
How severe is CVE-2025-63938?: CVE-2025-63938 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-63938 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63938?: CVE-2025-63938 affects Tinyproxy Project Tinyproxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63938?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-63938 have an EU (EUVD) identifier?: Yes. CVE-2025-63938 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199723.
When was CVE-2025-63938 published?: CVE-2025-63938 was published on 2025-11-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tinyproxy_project:tinyproxy:*:*:*:*:*:*:*:*

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