CVE-2005-4584: BZFlag server 2.0.4 and earlier allows remote attackers to cause a denial of service (application crash) via a

Q: How do I fix CVE-2005-4584?

bzflag server: upgrade to newer than 2.0.4. Exact commands for each OS are on this page.

Q: Is CVE-2005-4584 being exploited?

CVE-2005-4584 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-2005-4584 affect?

CVE-2005-4584 affects bzflag server. Severity is medium (CVSS 5.0). BZFlag server 2.0.4 and earlier allows remote attackers to cause a denial of service (application crash) via a callsign that is not followed by a NULL (\0) character.

Q: How urgent is CVE-2005-4584?

Priority 45/100. EPSS top 8%: very likely to be exploited; Public exploit reference

This month

MEDIUM 5.0UPGRADE

CVE-2005-4584 is a medium-severity flaw (CVSS 5.0) affecting bzflag server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

BZFlag server 2.0.4 and earlier allows remote attackers to cause a denial of service (application crash) via a callsign that is not followed by a NULL (\0) character.

Why this priority

EPSS top 8%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	4.5% (top 8%)
CISA exploited list	No
Published	2005-12-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: bzflag

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

Am I affected?

Timeline

2005-12-29 11:03 UTCPublished CVE record published
2026-06-16 22:19 UTCUpdated Record last modified

bzflag bzflag server UPGRADE

Affected: <= 2.0.4 · 1.7c_release_1 · 1.7c_release_2 · 1.7c_release_2_patch_1 · 1.7c_release_2_patch_2 · 1.7c_release_2_patch_3 · 1.7d1 · 1.7d2

Fixed in: newer than 2.0.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.0.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade bzflag-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bzflag-server

Note

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

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: BZFlag 2.0.4 - undelimited string Denial of Service

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-2005-4584?

bzflag server: upgrade to newer than 2.0.4. Exact commands for each OS are on this page.

Is CVE-2005-4584 being exploited?

CVE-2005-4584 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-2005-4584 affect?

CVE-2005-4584 affects bzflag server. Severity is medium (CVSS 5.0). BZFlag server 2.0.4 and earlier allows remote attackers to cause a denial of service (application crash) via a callsign that is not followed by a NULL (\0) character.

How urgent is CVE-2005-4584?

Priority 45/100. EPSS top 8%: very likely to be exploited; Public exploit reference

References

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