CVE-2001-1000: rlmadmin RADIUS management utility in Merit AAA Server 3.8M, 5.01, and possibly other versions, allows local u

Routine

LOW 2.1DOWNGRADE

CVE-2001-1000 is a low-severity flaw (CVSS 2.1) affecting aaa radius server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

rlmadmin RADIUS management utility in Merit AAA Server 3.8M, 5.01, and possibly other versions, allows local users to read arbitrary files via a symlink attack on the rlmadmin.help file.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Published	2001-09-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: merit

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

Am I affected?

Timeline

2001-09-07 04:00 UTCPublished CVE record published
2026-06-16 21:55 UTCUpdated Record last modified

merit aaa radius server DOWNGRADE

Affected: 3.8m · 5.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.8m

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.8m (Debian / Ubuntu)

apt-cache madison aaa-radius-server sudo apt install aaa-radius-server=<VERSION_BEFORE_3.8m> sudo apt-mark hold aaa-radius-server

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

dnf --showduplicates list aaa-radius-server sudo dnf downgrade aaa-radius-server-<VERSION_BEFORE_3.8m> sudo dnf versionlock add aaa-radius-server

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: Merit AAA RADIUS Server 3.8 - rlmadmin Symbolic Link

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-2001-1000?

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

Is CVE-2001-1000 being exploited?

CVE-2001-1000 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-2001-1000 affect?

CVE-2001-1000 affects aaa radius server. Severity is low (CVSS 2.1). rlmadmin RADIUS management utility in Merit AAA Server 3.8M, 5.01, and possibly other versions, allows local users to read arbitrary files via a symlink attack on the rlmadmin.help file.

How urgent is CVE-2001-1000?

Priority 27/100. Public exploit reference

References

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