CVE-2004-2168: BaSoMail 1.24 allows remote attackers to cause a denial of service (CPU consumption) via multiple connections

This month

MEDIUM 5.0DOWNGRADE

CVE-2004-2168 is a medium-severity flaw (CVSS 5.0) affecting basomail server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

BaSoMail 1.24 allows remote attackers to cause a denial of service (CPU consumption) via multiple connections to TCP port (1) 25 (SMTP) or (2) 110 (POP3).

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: baardsen software

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:09 UTCUpdated Record last modified

baardsen software basomail server DOWNGRADE

Affected: 1.24

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.24

1. Check installed version

apt-cache policy basomail-server || rpm -q basomail-server || basomail-server --version

2. No fixed release: DOWNGRADE to a release before 1.24 (Debian / Ubuntu)

apt-cache madison basomail-server sudo apt install basomail-server=<VERSION_BEFORE_1.24> sudo apt-mark hold basomail-server

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

dnf --showduplicates list basomail-server sudo dnf downgrade basomail-server-<VERSION_BEFORE_1.24> sudo dnf versionlock add basomail-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.

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-2004-2168?

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

Is CVE-2004-2168 being exploited?

CVE-2004-2168 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-2004-2168 affect?

CVE-2004-2168 affects basomail server. Severity is medium (CVSS 5.0). BaSoMail 1.24 allows remote attackers to cause a denial of service (CPU consumption) via multiple connections to TCP port (1) 25 (SMTP) or (2) 110 (POP3).

How urgent is CVE-2004-2168?

Priority 42/100. Public exploit reference

References

← Back to latest CVEs