CVE-2004-1917: Format string vulnerability in test_func_func in LCDProc 0.4.1 and earlier allows remote attackers to execute

This month

HIGH 7.5DOWNGRADE

CVE-2004-1917 is a high-severity flaw (CVSS 7.5) affecting lcdproc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in test_func_func in LCDProc 0.4.1 and earlier allows remote attackers to execute arbitrary code via format string specifiers in the str variable.

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	4.1% (top 9%)
CISA exploited list	No
Published	2004-04-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: lcdproc

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

Am I affected?

Timeline

2004-04-08 04:00 UTCPublished CVE record published
2026-06-16 22:08 UTCUpdated Record last modified

lcdproc lcdproc DOWNGRADE

Affected: 0.3 · 0.4 · 0.4.1_r1 · 4.0 · 4.1 · 4.2 · 4.3 · 4.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.3 (Debian / Ubuntu)

apt-cache madison lcdproc sudo apt install lcdproc=<VERSION_BEFORE_0.3> sudo apt-mark hold lcdproc

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

dnf --showduplicates list lcdproc sudo dnf downgrade lcdproc-<VERSION_BEFORE_0.3> sudo dnf versionlock add lcdproc

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-2004-1917?

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

Is CVE-2004-1917 being exploited?

CVE-2004-1917 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-2004-1917 affect?

CVE-2004-1917 affects lcdproc. Severity is high (CVSS 7.5). Format string vulnerability in test_func_func in LCDProc 0.4.1 and earlier allows remote attackers to execute arbitrary code via format string specifiers in the str variable.

How urgent is CVE-2004-1917?

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

Related CVEs

CVE-2004-1915 HIGH 7.5 DOWNGRADE Buffer overflow in the parse_all_client_messages function in LCDproc 0.4.x up to 0.4.4 allows remote attackers

References

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