How severe is CVE-2025-34107?

CVE-2025-34107 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2025-34107 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-34107?

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-2025-34107 have an EU (EUVD) identifier?

Yes. CVE-2025-34107 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21424.

When was CVE-2025-34107 published?

CVE-2025-34107 was published on 2025-07-15 and last updated on 2026-06-17.

CVE-2025-34107

CVE-2025-34107 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. 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-121.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-21424
Weakness: CWE-121
Published: 2025-07-15
Last modified: 2026-06-17

Description

A buffer overflow vulnerability exists in the WinaXe FTP Client version 7.7 within the FTP banner parsing functionality, WCMDPA10.dll. When the client connects to a remote FTP server and receives an overly long '220 Server Ready' response, the vulnerable component responsible for parsing the banner overflows a stack buffer, leading to arbitrary code execution under the context of the user.

Frequently asked questions

What is CVE-2025-34107?: A buffer overflow vulnerability exists in the WinaXe FTP Client version 7.7 within the FTP banner parsing functionality, WCMDPA10.dll. When the client connects to a remote FTP server and receives an overly long '220 Server Ready' response, the vulnerable component responsible for parsing the banner overflows a stack buffer, leading to arbitrary code execution under the context of the user.
How severe is CVE-2025-34107?: CVE-2025-34107 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2025-34107 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-34107?: 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-2025-34107 have an EU (EUVD) identifier?: Yes. CVE-2025-34107 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21424.
When was CVE-2025-34107 published?: CVE-2025-34107 was published on 2025-07-15 and last updated on 2026-06-17.

References

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