CVE-2025-3373Public exploitNetwork attack vector

Unauthenticated memory corruption via SITE CHMOD

Published Apr 7, 2025 · Updated Apr 7, 2025

Buffer overflow in PCMan FTP Server 2.0.7 allows remote attackers to corrupt process memory via a crafted SITE CHMOD command. Public records identify the SITE CHMOD command handler but do not disclose the unsafe copy operation or affected buffer. No authentication or user interaction is required; successful triggering can interrupt the FTP service and affect process confidentiality and integrity.

CVSS severity9.8
Critical
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Buffer overflow in PCMan FTP Server 2.0.7 allows remote attackers to corrupt process memory via a crafted SITE CHMOD command. Public records identify the SITE CHMOD command handler but do not disclose the unsafe copy operation or affected buffer. No authentication or user interaction is required; successful triggering can interrupt the FTP service and affect process confidentiality and integrity.

The record

CVE
CVE-2025-3373
Published
Apr 7, 2025
Updated
Apr 7, 2025
Vendor
PCMan
Product
PCMan FTP Server
Classifications
CWE-120, CWE-119, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PCMan · PCMan FTP Serverversion=2.0.7

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Overflow
CWE-119Memory Corruption
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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