CVE-2000-0321: Buffer overflow in IC Radius package allows a remote attacker to cause a denial of service via a long user nam

Routine

MEDIUM 5.0DOWNGRADE

CVE-2000-0321 is a medium-severity flaw (CVSS 5.0) affecting icradius. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in IC Radius package allows a remote attacker to cause a denial of service via a long user name.

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	1.4% (top 28%)
CISA exploited list	No
Published	2000-04-24
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: icradius

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

Am I affected?

Timeline

2000-04-24 04:00 UTCPublished CVE record published
2026-06-16 21:51 UTCUpdated Record last modified

icradius icradius DOWNGRADE

Affected: 0.14

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.14

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.14 (Debian / Ubuntu)

apt-cache madison icradius sudo apt install icradius=<VERSION_BEFORE_0.14> sudo apt-mark hold icradius

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

dnf --showduplicates list icradius sudo dnf downgrade icradius-<VERSION_BEFORE_0.14> sudo dnf versionlock add icradius

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-2000-0321?

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

Is CVE-2000-0321 being exploited?

CVE-2000-0321 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-2000-0321 affect?

CVE-2000-0321 affects icradius. Severity is medium (CVSS 5.0). Buffer overflow in IC Radius package allows a remote attacker to cause a denial of service via a long user name.

How urgent is CVE-2000-0321?

Priority 36/100. No elevated risk signals yet.

Related CVEs

CVE-2001-1377 MEDIUM 5.0 DOWNGRADE DOWNGRADE Multiple RADIUS implementations do not properly validate the Vendor-Length of the Vendor-Specific attribute, w
CVE-2001-1376 HIGH 7.5 DOWNGRADE DOWNGRADE Buffer overflow in digest calculation function of multiple RADIUS implementations allows remote attackers to c

References

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