CVE-2002-0964
Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service ...
Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service (resource exhaustion) via multiple responses to the initial challenge with different cd_key values, which reaches the player limit and prevents other players from connecting until the original responses have timed out.
Exploit likelihood
What each source reports
NVD Score used
Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service (resource exhaustion) via multiple responses to the initial challenge with different cd_key values, which reaches the player limit and prevents other players from connecting until the original responses have timed out.
- Record
CVE-2002-0964- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service (resource exhaustion) via multiple responses to the initial challenge with different cd_key values, which reaches the player limit and prevents other players from connecting until the original responses have timed out.
- Record
CVE-2002-0964- Updated
- 2026-11-02
EUVDEUVD-2002-0953 No score
Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service (resource exhaustion) via multiple responses to the initial challenge with different cd_key values, which reaches the player limit and prevents other players from connecting until the original responses have timed out.
- Record
EUVD-2002-0953- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-p2q4-m99w-xgjx No score
Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service ...
Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service (resource exhaustion) via multiple responses to the initial challenge with different cd_key values, which reaches the player limit and prevents other players from connecting until the original responses have timed out.
- Record
GHSA-p2q4-m99w-xgjx- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Half-Life Server 1.1/3.1 - New Player Flood Denial of Service | 2002-06-20 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2002-0964 is a medium vulnerability (CVSS 5.0) in Valve Software Half-life, published October 4, 2002. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 3.16%, the 88th percentile. No source names a fixed version.