CVE-2004-0283: Mailmgr 1.2.3 allows local users to overwrite arbitrary files via a symlink attack on (1) /tmp/mailmgr.unsort,

Routine

LOW 2.1DOWNGRADE

CVE-2004-0283 is a low-severity flaw (CVSS 2.1) affecting mailmgr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Mailmgr 1.2.3 allows local users to overwrite arbitrary files via a symlink attack on (1) /tmp/mailmgr.unsort, (2) /tmp/mailmgr.tmp, or (3) /tmp/mailmgr.sort.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Published	2004-11-23
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mailmgr

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

Am I affected?

Timeline

2004-11-23 05:00 UTCPublished CVE record published
2026-06-16 22:05 UTCUpdated Record last modified

mailmgr mailmgr DOWNGRADE

Affected: 1.2.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2.3 (Debian / Ubuntu)

apt-cache madison mailmgr sudo apt install mailmgr=<VERSION_BEFORE_1.2.3> sudo apt-mark hold mailmgr

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

dnf --showduplicates list mailmgr sudo dnf downgrade mailmgr-<VERSION_BEFORE_1.2.3> sudo dnf versionlock add mailmgr

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-2004-0283?

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

Is CVE-2004-0283 being exploited?

CVE-2004-0283 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-2004-0283 affect?

CVE-2004-0283 affects mailmgr. Severity is low (CVSS 2.1). Mailmgr 1.2.3 allows local users to overwrite arbitrary files via a symlink attack on (1) /tmp/mailmgr.unsort, (2) /tmp/mailmgr.tmp, or (3) /tmp/mailmgr.sort.

How urgent is CVE-2004-0283?

Priority 14/100. No elevated risk signals yet.

References

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