CVE-2025-4255
Published: 05 May 2025
Summary
CVE-2025-4255 is a medium-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Pcman Ftp Server. Its CVSS base score is 6.9 (Medium).
Operationally, ranked in the top 10.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
PCMan FTP Server version 2.0.7 is affected by a buffer overflow vulnerability in the RMD Command Handler component, tracked as CVE-2025-4255 and mapped to CWE-119 and CWE-120. The issue arises from improper handling of input to the RMD command and received a CVSS 4.0 score of 6.9, reflecting network-accessible attack vectors without required authentication or user interaction.
An unauthenticated remote attacker can supply crafted RMD commands to trigger the overflow, resulting in limited impacts to confidentiality, integrity, and availability on the affected server. Public exploit code has already been disclosed.
No vendor advisories or patch information appear in the referenced sources. The associated EPSS score remains flat at 0.0438 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-13341
Vulnerability details
A vulnerability classified as critical has been found in PCMan FTP Server 2.0.7. This affects an unknown part of the component RMD Command Handler. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit…
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has been disclosed to the public and may be used.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
Memory protections (e.g., W^X, ASLR) make exploitation of buffer-boundary violations far harder to turn into code execution.
Detects exploitation attempts that produce memory corruption, crashes, or anomalous behavior.