CVE-2004-0980: Format string vulnerability in ez-ipupdate.c for ez-ipupdate 3.0.10 through 3.0.11b8, when running in daemon m

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HIGH 10.0WATCHLISTDOWNGRADEMITIGATEMITIGATE

CVE-2004-0980 is a high-severity flaw (CVSS 10.0) affecting ez-ipupdate, debian linux, linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in ez-ipupdate.c for ez-ipupdate 3.0.10 through 3.0.11b8, when running in daemon mode with certain service types in use, allows remote servers to execute arbitrary code.

Why this priority

Critical severity
EPSS top 10%: very likely to be exploited
On your watchlist

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	3.8% (top 10%)
CISA exploited list	No
Published	2005-02-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: angus mackay · debian · gentoo

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

Am I affected?

Timeline

2005-02-09 05:00 UTCPublished CVE record published
2026-06-16 22:06 UTCUpdated Record last modified

angus mackay ez-ipupdate DOWNGRADE

Affected: 3.0.11b5 · 3.0.11b8

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.11b5

1. Check installed version

apt-cache policy ez-ipupdate || rpm -q ez-ipupdate || ez-ipupdate --version

2. No fixed release: DOWNGRADE to a release before 3.0.11b5 (Debian / Ubuntu)

apt-cache madison ez-ipupdate sudo apt install ez-ipupdate=<VERSION_BEFORE_3.0.11b5> sudo apt-mark hold ez-ipupdate

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

dnf --showduplicates list ez-ipupdate sudo dnf downgrade ez-ipupdate-<VERSION_BEFORE_3.0.11b5> sudo dnf versionlock add ez-ipupdate

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.

debian debian linux MITIGATE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

gentoo linux MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2004-0980?

ez-ipupdate: downgrade or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation; linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-0980 being exploited?

CVE-2004-0980 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-2004-0980 affect?

CVE-2004-0980 affects ez-ipupdate, debian linux, linux. Severity is high (CVSS 10.0). Format string vulnerability in ez-ipupdate.c for ez-ipupdate 3.0.10 through 3.0.11b8, when running in daemon mode with certain service types in use, allows remote servers to execute arbitrary code.

How urgent is CVE-2004-0980?

Priority 63/100. Critical severity; EPSS top 10%: very likely to be exploited; On your watchlist

Software pages

Debian vulnerabilities

Related CVEs

CVE-2003-0887 LOW 2.1 DOWNGRADE ez-ipupdate 3.0.11b7 and earlier creates insecure temporary cache files, which allows local users to conduct u

References

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