CVE-2000-0680: The CVS 1.10.8 server does not properly restrict users from creating arbitrary Checkin.prog or Update.prog pro

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HIGH 7.2DOWNGRADE

CVE-2000-0680 is a high-severity flaw (CVSS 7.2) affecting cvs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The CVS 1.10.8 server does not properly restrict users from creating arbitrary Checkin.prog or Update.prog programs, which allows remote CVS committers to modify or create Trojan horse programs with the Checkin.prog or Update.prog names, then performing a CVS commit action.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Published	2000-10-20
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cvs

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

Am I affected?

Timeline

2000-10-20 04:00 UTCPublished CVE record published
2026-06-16 21:52 UTCUpdated Record last modified

cvs cvs DOWNGRADE

Affected: 1.10.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.10.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.10.8 (Debian / Ubuntu)

apt-cache madison cvs sudo apt install cvs=<VERSION_BEFORE_1.10.8> sudo apt-mark hold cvs

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

dnf --showduplicates list cvs sudo dnf downgrade cvs-<VERSION_BEFORE_1.10.8> sudo dnf versionlock add cvs

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: CVS Kit CVS Server 1.10.8 - 'Checkin.prog' Binary Execution

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-2000-0680?

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

Is CVE-2000-0680 being exploited?

CVE-2000-0680 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-2000-0680 affect?

CVE-2000-0680 affects cvs. Severity is high (CVSS 7.2). The CVS 1.10.8 server does not properly restrict users from creating arbitrary Checkin.prog or Update.prog programs, which allows remote CVS committers to modify or create Trojan horse programs with the Checkin.prog or Update.prog names, th

How urgent is CVE-2000-0680?

Priority 48/100. High severity; Public exploit reference

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References

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