CVE-2000-1080: Quake 1 (quake1) and ProQuake 1.01 and earlier allow remote attackers to cause a denial of service via a malfo

Routine

MEDIUM 5.0DOWNGRADEDOWNGRADE

CVE-2000-1080 is a medium-severity flaw (CVSS 5.0) affecting quake, proquake. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Quake 1 (quake1) and ProQuake 1.01 and earlier allow remote attackers to cause a denial of service via a malformed (empty) UDP packet.

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	1.7% (top 23%)
CISA exploited list	No
Published	2000-11-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: id software · j. p. grossman

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

Am I affected?

Timeline

2000-11-01 05:00 UTCPublished CVE record published
2026-06-16 21:53 UTCUpdated Record last modified

id software quake DOWNGRADE

Affected: 1.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.9 (Debian / Ubuntu)

apt-cache madison quake sudo apt install quake=<VERSION_BEFORE_1.9> sudo apt-mark hold quake

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

dnf --showduplicates list quake sudo dnf downgrade quake-<VERSION_BEFORE_1.9> sudo dnf versionlock add quake

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.

j. p. grossman proquake DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison proquake sudo apt install proquake=<VERSION_BEFORE_1.0> sudo apt-mark hold proquake

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

dnf --showduplicates list proquake sudo dnf downgrade proquake-<VERSION_BEFORE_1.0> sudo dnf versionlock add proquake

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-2000-1080?

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

Is CVE-2000-1080 being exploited?

CVE-2000-1080 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-2000-1080 affect?

CVE-2000-1080 affects quake, proquake. Severity is medium (CVSS 5.0). Quake 1 (quake1) and ProQuake 1.01 and earlier allow remote attackers to cause a denial of service via a malformed (empty) UDP packet.

How urgent is CVE-2000-1080?

Priority 37/100. No elevated risk signals yet.

Related CVEs

CVE-1999-1569 MEDIUM 5.0 DOWNGRADE Quake 1 and NetQuake servers allow remote attackers to cause a denial of service (resource exhaustion or force

References

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