CVE-2005-0958: Format string vulnerability in the log_do function in log.c for YepYep mtftpd 0.0.3, when the statistics optio

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HIGH 7.5DOWNGRADE

CVE-2005-0958 is a high-severity flaw (CVSS 7.5) affecting mtftpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in the log_do function in log.c for YepYep mtftpd 0.0.3, when the statistics option is enabled, allows remote attackers to execute arbitrary code via the CWD command.

Why this priority

High severity
EPSS top 9%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.4% (top 9%)
CISA exploited list	No
Published	2005-05-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: yepyep

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

Am I affected?

Timeline

2005-05-02 04:00 UTCPublished CVE record published
2026-06-16 22:12 UTCUpdated Record last modified

yepyep mtftpd DOWNGRADE

Affected: 0.1a · 0.2 · 0.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1a

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.1a (Debian / Ubuntu)

apt-cache madison mtftpd sudo apt install mtftpd=<VERSION_BEFORE_0.1a> sudo apt-mark hold mtftpd

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

dnf --showduplicates list mtftpd sudo dnf downgrade mtftpd-<VERSION_BEFORE_0.1a> sudo dnf versionlock add mtftpd

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: mtftpd 0.0.3 - Remote Code Execution

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-2005-0958?

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

Is CVE-2005-0958 being exploited?

CVE-2005-0958 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-2005-0958 affect?

CVE-2005-0958 affects mtftpd. Severity is high (CVSS 7.5). Format string vulnerability in the log_do function in log.c for YepYep mtftpd 0.0.3, when the statistics option is enabled, allows remote attackers to execute arbitrary code via the CWD command.

How urgent is CVE-2005-0958?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2005-0959 HIGH 7.5 DOWNGRADE Buffer overflow in the mt_do_dir function in YepYep mtftpd 0.0.3 may allow attackers to execute arbitrary code

References

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