CVE-2003-1354: Multiple GameSpy 3D 2.62 compatible gaming servers generate very large UDP responses to small requests, which

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MEDIUM 5.0DOWNGRADE

CVE-2003-1354 is a medium-severity flaw (CVSS 5.0) affecting gamespy 3d. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple GameSpy 3D 2.62 compatible gaming servers generate very large UDP responses to small requests, which allows remote attackers to use the servers as an amplifier in DDoS attacks with spoofed UDP query packets, as demonstrated using Battlefield 1942.

Why this priority

EPSS top 6%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	6.2% (top 6%)
CISA exploited list	No
Weakness	CWE-119
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: gamespy3d

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

Am I affected?

Timeline

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:03 UTCUpdated Record last modified

gamespy3d gamespy 3d DOWNGRADE

Affected: 2.62

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.62

1. Check installed version

apt-cache policy gamespy-3d || rpm -q gamespy-3d || gamespy-3d --version

2. No fixed release: DOWNGRADE to a release before 2.62 (Debian / Ubuntu)

apt-cache madison gamespy-3d sudo apt install gamespy-3d=<VERSION_BEFORE_2.62> sudo apt-mark hold gamespy-3d

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

dnf --showduplicates list gamespy-3d sudo dnf downgrade gamespy-3d-<VERSION_BEFORE_2.62> sudo dnf versionlock add gamespy-3d

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.

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: GameSpy 3D 2.62 - Packet Amplification 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-2003-1354?

gamespy 3d: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2003-1354 being exploited?

CVE-2003-1354 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-2003-1354 affect?

CVE-2003-1354 affects gamespy 3d. Severity is medium (CVSS 5.0). Multiple GameSpy 3D 2.62 compatible gaming servers generate very large UDP responses to small requests, which allows remote attackers to use the servers as an amplifier in DDoS attacks with spoofed UDP query packets, as demonstrated using B

How urgent is CVE-2003-1354?

Priority 46/100. EPSS top 6%: very likely to be exploited; Public exploit reference

References

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