CVE-2004-0013: jabber 1.4.2, 1.4.2a, and possibly earlier versions, does not properly handle SSL connections, which allows re

Routine

MEDIUM 5.0DOWNGRADE

CVE-2004-0013 is a medium-severity flaw (CVSS 5.0) affecting jabber server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

jabber 1.4.2, 1.4.2a, and possibly earlier versions, does not properly handle SSL connections, which allows remote attackers to cause a denial of service (crash).

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Published	2004-02-03
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: jabber software foundation

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

Am I affected?

Timeline

2004-02-03 05:00 UTCPublished CVE record published
2026-06-16 22:04 UTCUpdated Record last modified

jabber software foundation jabber server DOWNGRADE

Affected: 1.4.2a · 1.4.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4.2a

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.4.2a (Debian / Ubuntu)

apt-cache madison jabber-server sudo apt install jabber-server=<VERSION_BEFORE_1.4.2a> sudo apt-mark hold jabber-server

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

dnf --showduplicates list jabber-server sudo dnf downgrade jabber-server-<VERSION_BEFORE_1.4.2a> sudo dnf versionlock add jabber-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-2004-0013?

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

Is CVE-2004-0013 being exploited?

CVE-2004-0013 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-2004-0013 affect?

CVE-2004-0013 affects jabber server. Severity is medium (CVSS 5.0). jabber 1.4.2, 1.4.2a, and possibly earlier versions, does not properly handle SSL connections, which allows remote attackers to cause a denial of service (crash).

How urgent is CVE-2004-0013?

Priority 37/100. No elevated risk signals yet.

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References

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