CVE-2004-2217: Multiple unknown vulnerabilities in yhttpd in yChat before 0.7 allow remote attackers to cause a denial of ser

Routine

MEDIUM 5.0DOWNGRADE

CVE-2004-2217 is a medium-severity flaw (CVSS 5.0) affecting ychat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple unknown vulnerabilities in yhttpd in yChat before 0.7 allow remote attackers to cause a denial of service (segmentation fault) via unknown vectors.

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	1.6% (top 24%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ychat

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

ychat ychat DOWNGRADE

Affected: 0.1 · 0.2 · 0.3 · 0.4 · 0.5 · 0.5.1 · 0.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.1 (Debian / Ubuntu)

apt-cache madison ychat sudo apt install ychat=<VERSION_BEFORE_0.1> sudo apt-mark hold ychat

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

dnf --showduplicates list ychat sudo dnf downgrade ychat-<VERSION_BEFORE_0.1> sudo dnf versionlock add ychat

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-2004-2217?

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

Is CVE-2004-2217 being exploited?

CVE-2004-2217 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-2004-2217 affect?

CVE-2004-2217 affects ychat. Severity is medium (CVSS 5.0). Multiple unknown vulnerabilities in yhttpd in yChat before 0.7 allow remote attackers to cause a denial of service (segmentation fault) via unknown vectors.

How urgent is CVE-2004-2217?

Priority 36/100. No elevated risk signals yet.

References

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