CVE-2002-0664: The default Access Control Lists (ACLs) of the administration database for ZMerge 4.x and 5.x provides arbitra

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HIGH 7.5DOWNGRADE

CVE-2002-0664 is a high-severity flaw (CVSS 7.5) affecting zmerge. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The default Access Control Lists (ACLs) of the administration database for ZMerge 4.x and 5.x provides arbitrary users (including anonymous users) with Manager level access, which allows the users to read or modify import/export scripts.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Published	2002-10-04
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: granite software

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

Am I affected?

Timeline

2002-10-04 04:00 UTCPublished CVE record published
2026-06-16 21:57 UTCUpdated Record last modified

granite software zmerge DOWNGRADE

Affected: 4.0 · 5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison zmerge sudo apt install zmerge=<VERSION_BEFORE_4.0> sudo apt-mark hold zmerge

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

dnf --showduplicates list zmerge sudo dnf downgrade zmerge-<VERSION_BEFORE_4.0> sudo dnf versionlock add zmerge

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-2002-0664?

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

Is CVE-2002-0664 being exploited?

CVE-2002-0664 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-2002-0664 affect?

CVE-2002-0664 affects zmerge. Severity is high (CVSS 7.5). The default Access Control Lists (ACLs) of the administration database for ZMerge 4.x and 5.x provides arbitrary users (including anonymous users) with Manager level access, which allows the users to read or modify import/export scripts.

How urgent is CVE-2002-0664?

Priority 44/100. High severity

References

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