CVE-2005-1556: Gamespy cd-key validation system allows remote attackers to cause a denial of service (cd-key already in use)

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MEDIUM 5.0MITIGATE

CVE-2005-1556 is a medium-severity flaw (CVSS 5.0) affecting gamespy sdk cd-key validation toolkit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Gamespy cd-key validation system allows remote attackers to cause a denial of service (cd-key already in use) by capturing and replaying a cd-key authorization session.

Why this priority

Public exploit reference

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	2005-05-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: gamespy

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

Am I affected?

Timeline

2005-05-14 04:00 UTCPublished CVE record published
2026-06-16 22:13 UTCUpdated Record last modified

gamespy gamespy sdk cd-key validation toolkit MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy gamespy-sdk-cd-key-validation-toolkit || rpm -q gamespy-sdk-cd-key-validation-toolkit || gamespy-sdk-cd-key-validation-toolkit --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2005-1556?

gamespy sdk cd-key validation toolkit: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-1556 being exploited?

CVE-2005-1556 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-2005-1556 affect?

CVE-2005-1556 affects gamespy sdk cd-key validation toolkit. Severity is medium (CVSS 5.0). Gamespy cd-key validation system allows remote attackers to cause a denial of service (cd-key already in use) by capturing and replaying a cd-key authorization session.

How urgent is CVE-2005-1556?

Priority 42/100. Public exploit reference

References

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