CVE-2001-0936: Buffer overflow in Frox transparent FTP proxy 0.6.6 and earlier, with the local caching method selected, allow

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HIGH 7.5DOWNGRADE

CVE-2001-0936 is a high-severity flaw (CVSS 7.5) affecting frox. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in Frox transparent FTP proxy 0.6.6 and earlier, with the local caching method selected, allows remote FTP servers to run arbitrary code via a long response to an MDTM request.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Published	2001-11-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: frox

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2001-11-30 05:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

frox frox DOWNGRADE

Affected: 0.6.0 · 0.6.1 · 0.6.2 · 0.6.3 · 0.6.4 · 0.6.5 · 0.6.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.6.0

1. Check installed version

apt-cache policy frox || rpm -q frox || frox --version

2. No fixed release: DOWNGRADE to a release before 0.6.0 (Debian / Ubuntu)

apt-cache madison frox sudo apt install frox=<VERSION_BEFORE_0.6.0> sudo apt-mark hold frox

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list frox sudo dnf downgrade frox-<VERSION_BEFORE_0.6.0> sudo dnf versionlock add frox

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2001-0936?

frox: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2001-0936 being exploited?

CVE-2001-0936 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-2001-0936 affect?

CVE-2001-0936 affects frox. Severity is high (CVSS 7.5). Buffer overflow in Frox transparent FTP proxy 0.6.6 and earlier, with the local caching method selected, allows remote FTP servers to run arbitrary code via a long response to an MDTM request.

How urgent is CVE-2001-0936?

Priority 45/100. High severity

Related CVEs

CVE-2005-2808 HIGH 7.5 DOWNGRADE frox 0.7.16 and 0.7.17 does not properly parse certain Deny ACLs, which might allow attackers to bypass intend
CVE-2005-2807 HIGH 7.2 DOWNGRADE frox 0.7.18, when running setuid root, does not properly drop privileges when reading a configuration file, wh

References

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