Remote Buffer Overflow in PCMan FTP Server 2.0.7 (CVE‑2025‑4871) Enables Arbitrary Code Execution
What Happened – A remote buffer‑overflow vulnerability (CVE‑2025‑4871) was disclosed for PCMan FTP Server version 2.0.7. An attacker can send a specially‑crafted FTP command that overwrites the stack, hijacks execution flow, and runs arbitrary code on the target Windows host.
Why It Matters for Compliance & Audit Readiness
- The flaw illustrates a classic control‑gap: unpatched third‑party software that can be leveraged to bypass logical and physical security controls.
- SOC 2 audit programs require documented evidence that all critical assets are continuously monitored for known vulnerabilities and that remediation is tracked.
- Verisq’s Control Mapping capability lets you map this vulnerability to the relevant SOC 2 criteria (e.g., CC6.1 System Operations, CC7.2 Change Management) and automatically collect remediation evidence for auditors.
Who Is Affected – Any organization that runs PCMan FTP Server 2.0.7 on Windows (common in legacy file‑transfer environments across finance, healthcare, manufacturing, and SaaS).
Recommended Actions
- Verify whether PCMan FTP Server 2.0.7 is in use; inventory all FTP services.
- Apply the vendor‑released patch or upgrade to a non‑vulnerable version immediately.
- Record the remediation ticket in your change‑management system and capture patch‑install logs as SOC 2 evidence.
- Map the vulnerability to SOC 2 control CC6.1 (System Operations) and CC7.2 (Change Management) using a control‑mapping tool; schedule periodic scans to ensure continued compliance.
Source: Exploit Database – PCMan 2.0.7 Buffer Overflow (CVE‑2025‑4871)
Technical Notes – The exploit targets the FTP USER command on Windows XP SP2/SP3, overwriting the return address with a JMP ESP instruction (0x74E32FD9). Successful exploitation yields a reverse‑shell payload (e.g., windows/shell_reverse_tcp). No public CVSS score is listed, but the remote‑code‑execution nature places it in the Critical severity band. Source: same as above