CVE-2004-0398: Heap-based buffer overflow in the ne_rfc1036_parse date parsing function for the neon library (libneon) 0.24.5

Q: How do I fix CVE-2004-0398?

cadaver: upgrade to 0.22.0; neon: upgrade to newer than 0.24.5; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2004-0398 being exploited?

CVE-2004-0398 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2004-0398 affect?

CVE-2004-0398 affects cadaver, neon, debian linux. Severity is high (CVSS 7.5). Heap-based buffer overflow in the ne_rfc1036_parse date parsing function for the neon library (libneon) 0.24.5 and earlier, as used by cadaver before 0.22, allows remote WebDAV servers to execute arbitrary code on the client.

Q: How urgent is CVE-2004-0398?

Priority 54/100. High severity; EPSS top 8%: very likely to be exploited; On your watchlist

This month

HIGH 7.5WATCHLISTUPGRADEUPGRADEMITIGATE

CVE-2004-0398 is a high-severity flaw (CVSS 7.5) affecting cadaver, neon, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Heap-based buffer overflow in the ne_rfc1036_parse date parsing function for the neon library (libneon) 0.24.5 and earlier, as used by cadaver before 0.22, allows remote WebDAV servers to execute arbitrary code on the client.

Why this priority

High severity
EPSS top 8%: very likely to be exploited
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	5.0% (top 8%)
CISA exploited list	No
Weakness	CWE-787
Published	2004-07-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: debian · webdav

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

Am I affected?

Timeline

2004-07-07 04:00 UTCPublished CVE record published
2026-06-16 22:05 UTCUpdated Record last modified

webdav cadaver UPGRADE

Affected: < 0.22.0

Fixed in: 0.22.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.22.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cadaver

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cadaver

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

webdav neon UPGRADE

Affected: <= 0.24.5

Fixed in: newer than 0.24.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.24.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade neon

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade neon

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

debian debian linux MITIGATE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2004-0398?

cadaver: upgrade to 0.22.0; neon: upgrade to newer than 0.24.5; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-0398 being exploited?

CVE-2004-0398 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-2004-0398 affect?

CVE-2004-0398 affects cadaver, neon, debian linux. Severity is high (CVSS 7.5). Heap-based buffer overflow in the ne_rfc1036_parse date parsing function for the neon library (libneon) 0.24.5 and earlier, as used by cadaver before 0.22, allows remote WebDAV servers to execute arbitrary code on the client.

How urgent is CVE-2004-0398?

Priority 54/100. High severity; EPSS top 8%: very likely to be exploited; On your watchlist

Software pages

Debian vulnerabilities

References

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