CVE-2004-0131: The rad_print_request function in logger.c for GNU Radius daemon (radiusd) before 1.2 allows remote attackers

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MEDIUM 5.0DOWNGRADE

CVE-2004-0131 is a medium-severity flaw (CVSS 5.0) affecting radius. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The rad_print_request function in logger.c for GNU Radius daemon (radiusd) before 1.2 allows remote attackers to cause a denial of service (crash) via a UDP packet with an Acct-Status-Type attribute without a value and no Acct-Session-Id attribute, which causes a null dereference.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	3.5% (top 11%)
CISA exploited list	No
Published	2004-03-03
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: gnu

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

Am I affected?

Timeline

2004-03-03 05:00 UTCPublished CVE record published
2026-06-16 22:05 UTCUpdated Record last modified

gnu radius DOWNGRADE

Affected: 1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.1 (Debian / Ubuntu)

apt-cache madison radius sudo apt install radius=<VERSION_BEFORE_1.1> sudo apt-mark hold radius

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

dnf --showduplicates list radius sudo dnf downgrade radius-<VERSION_BEFORE_1.1> sudo dnf versionlock add radius

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-2004-0131?

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

Is CVE-2004-0131 being exploited?

CVE-2004-0131 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-2004-0131 affect?

CVE-2004-0131 affects radius. Severity is medium (CVSS 5.0). The rad_print_request function in logger.c for GNU Radius daemon (radiusd) before 1.2 allows remote attackers to cause a denial of service (crash) via a UDP packet with an Acct-Status-Type attribute without a value and no Acct-Session-Id at

How urgent is CVE-2004-0131?

Priority 40/100. No elevated risk signals yet.

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References

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