CVE-2025-5637: A vulnerability, which was classified as critical, was found in PCMan FTP Server 2.0.7

Q: How do I fix CVE-2025-5637?

ftp server: upgrade to newer than 2.0.7. Exact commands for each OS are on this page.

Q: Is CVE-2025-5637 being exploited?

CVE-2025-5637 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-5637 affect?

CVE-2025-5637 affects ftp server. Severity is high (CVSS 7.3). A vulnerability, which was classified as critical, was found in PCMan FTP Server 2.0.7. Affected is an unknown function of the component SYSTEM Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack

Q: How urgent is CVE-2025-5637?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.3REMOTEUPGRADE

CVE-2025-5637 is a high-severity flaw (CVSS 7.3) affecting ftp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as critical, was found in PCMan FTP Server 2.0.7. Affected is an unknown function of the component SYSTEM Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-119, CWE-120
Published	2025-06-05
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: pcman

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-06-05 05:15 UTCPublished CVE record published
2026-06-17 09:48 UTCUpdated Record last modified

pcman ftp server UPGRADE

Affected: <= 2.0.7

Fixed in: newer than 2.0.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ftp-server || rpm -q ftp-server || ftp-server --version

2. UPGRADE to newer than 2.0.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ftp-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ftp-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-5637?

ftp server: upgrade to newer than 2.0.7. Exact commands for each OS are on this page.

Is CVE-2025-5637 being exploited?

CVE-2025-5637 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-5637 affect?

CVE-2025-5637 affects ftp server. Severity is high (CVSS 7.3). A vulnerability, which was classified as critical, was found in PCMan FTP Server 2.0.7. Affected is an unknown function of the component SYSTEM Command Handler. The manipulation leads to buffer overflow. It is possible to launch the attack

How urgent is CVE-2025-5637?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-6265 HIGH 8.8 UPGRADE Insecure preserved inherited permissions vulnerability in Cerberus FTP Server on Windows allows Privilege Esca
CVE-2025-5331 HIGH 7.3 DOWNGRADE A vulnerability has been found in PCMan FTP Server 2.0.7 and classified as critical
CVE-2025-5635 HIGH 7.3 DOWNGRADE A vulnerability classified as critical was found in PCMan FTP Server 2.0.7
CVE-2025-5636 HIGH 7.3 UPGRADE A vulnerability, which was classified as critical, has been found in PCMan FTP Server 2.0.7
CVE-2025-5634 HIGH 7.3 DOWNGRADE A vulnerability classified as critical has been found in PCMan FTP Server 2.0.7

References

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