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CVE-2005-1556

15
FAUCET Score

CVE-2005-1556 describes a denial-of-service vulnerability in the GameSpy CD-key validation system, specifically affecting the GameSpy SDK CD-key Validation Toolkit. An unauthenticated remote attacker can exploit this by replaying a captured CD-key authorization session, causing the system to incorrectly report the CD-key as already in use. With a CVSS score of 5.0, this vulnerability is of medium severity, requiring low attack complexity and impacting availability. There is no evidence of active exploitation, nor is exploit code publicly available in Metasploit or ExploitDB, and it has received negligible community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:gamespy:gamespy_sdk_cd-key_validation_toolkit:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.70%
Probability of exploitation in next 30 days
EPSS Percentile
74.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0170 is in the 60th percentile among its peer group of 23,684 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

aluigi.altervista.org / adv/gskeyinuse-adv.txt
ExploitVendor Advisory
archives.neohapsis.com / archives/fulldisclosure/2005-05/0065.html
ExploitVendor Advisory
marc.info
secunia.com / advisories/15254
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/20417