How severe is CVE-2025-4239?

CVE-2025-4239 has a CVSS 3.x base score of 7.3, rated high 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 low.

Is CVE-2025-4239 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-4239?

CVE-2025-4239 affects Pcman Ftp Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-4239?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-4239 have an EU (EUVD) identifier?

Yes. CVE-2025-4239 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13355.

When was CVE-2025-4239 published?

CVE-2025-4239 was published on 2025-05-03 and last updated on 2026-06-17.

CVE-2025-4239

CVE-2025-4239 is a high-severity vulnerability in Pcman Ftp Server with a CVSS 3.x base score of 7.3. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
CVSS v4: 6.9
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-13355
Weakness: CWE-120
Affected product: Pcman Ftp Server
Published: 2025-05-03
Last modified: 2026-06-17

Description

A vulnerability was found in PCMan FTP Server 2.0.7. It has been declared as critical. This vulnerability affects unknown code of the component TYPE Command Handler. The manipulation leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-4239?: A vulnerability was found in PCMan FTP Server 2.0.7. It has been declared as critical. This vulnerability affects unknown code of the component TYPE Command Handler. The manipulation leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-4239?: CVE-2025-4239 has a CVSS 3.x base score of 7.3, rated high 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 low.
Is CVE-2025-4239 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-4239?: CVE-2025-4239 affects Pcman Ftp Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-4239?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-4239 have an EU (EUVD) identifier?: Yes. CVE-2025-4239 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-13355.
When was CVE-2025-4239 published?: CVE-2025-4239 was published on 2025-05-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pcman:ftp_server:2.0.7:*:*:*:*:*:*:*

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