CVE-2004-1437: Multiple buffer overflows in the digest authentication functionality in Pavuk 0.9.28-r2 and earlier allow remo

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HIGH 7.5DOWNGRADE

CVE-2004-1437 is a high-severity flaw (CVSS 7.5) affecting pavuk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple buffer overflows in the digest authentication functionality in Pavuk 0.9.28-r2 and earlier allow remote attackers to execute arbitrary code.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	13.4% (top 4%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: pavuk

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 22:07 UTCUpdated Record last modified

pavuk pavuk DOWNGRADE

Affected: 0.9pl28i · 0.928r1 · 0.928r2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9pl28i

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9pl28i (Debian / Ubuntu)

apt-cache madison pavuk sudo apt install pavuk=<VERSION_BEFORE_0.9pl28i> sudo apt-mark hold pavuk

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

dnf --showduplicates list pavuk sudo dnf downgrade pavuk-<VERSION_BEFORE_0.9pl28i> sudo dnf versionlock add pavuk

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: Pavuk Digest - Authentication Remote Buffer Overflow

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-2004-1437?

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

Is CVE-2004-1437 being exploited?

CVE-2004-1437 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-2004-1437 affect?

CVE-2004-1437 affects pavuk. Severity is high (CVSS 7.5). Multiple buffer overflows in the digest authentication functionality in Pavuk 0.9.28-r2 and earlier allow remote attackers to execute arbitrary code.

How urgent is CVE-2004-1437?

Priority 55/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2005-1035 HIGH 7.5 DOWNGRADE Multiple buffer overflows in Pavuk before 0.9.32 have unknown attack vectors and impact.
CVE-2004-0456 HIGH 7.6 DOWNGRADE MITIGATE Stack-based buffer overflow in pavuk 0.9pl28, 0.9pl27, and possibly other versions allows remote web sites to

References

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