CVE-2006-1403: Format string vulnerability in the PrintString function in c_console.cpp in client/server Doom (csDoom) 0.7 an

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HIGH 7.8DOWNGRADE

CVE-2006-1403 is a high-severity flaw (CVSS 7.8) affecting csdoom 2005. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in the PrintString function in c_console.cpp in client/server Doom (csDoom) 0.7 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary commands via format string specifiers in strings passed to the console.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	2.8% (top 14%)
CISA exploited list	No
Published	2006-03-28
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: csdoom

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

Am I affected?

Timeline

2006-03-28 11:06 UTCPublished CVE record published
2026-06-16 22:22 UTCUpdated Record last modified

csdoom csdoom 2005 DOWNGRADE

Affected: 0.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.7

1. Check installed version

apt-cache policy csdoom-2005 || rpm -q csdoom-2005 || csdoom-2005 --version

2. No fixed release: DOWNGRADE to a release before 0.7 (Debian / Ubuntu)

apt-cache madison csdoom-2005 sudo apt install csdoom-2005=<VERSION_BEFORE_0.7> sudo apt-mark hold csdoom-2005

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

dnf --showduplicates list csdoom-2005 sudo dnf downgrade csdoom-2005-<VERSION_BEFORE_0.7> sudo dnf versionlock add csdoom-2005

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-2006-1403?

csdoom 2005: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-1403 being exploited?

CVE-2006-1403 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-2006-1403 affect?

CVE-2006-1403 affects csdoom 2005. Severity is high (CVSS 7.8). Format string vulnerability in the PrintString function in c_console.cpp in client/server Doom (csDoom) 0.7 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary commands via format string specifier

How urgent is CVE-2006-1403?

Priority 54/100. High severity; Public exploit reference

References

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