Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service…
Priority LOW 29Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.03155 88th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:valve_software:half-life:1.1.0.4:*:linux:*:*:*:*:* | 1.1.0.4 | Vulnerable | Valve Software |
| cpe:2.3:a:valve_software:half-life:1.1.0.4:*:windows:*:*:*:*:* | 1.1.0.4 | Vulnerable | Valve Software |
| cpe:2.3:a:valve_software:half-life:1.1.0.8:*:*:*:*:*:*:* | 1.1.0.8 | Vulnerable | Valve Software |
| cpe:2.3:a:valve_software:half-life:1.1.0.9:*:*:*:*:*:*:* | 1.1.0.9 | Vulnerable | Valve Software |
| cpe:2.3:a:valve_software:half-life:1.1.1.0:*:*:*:*:*:*:* | 1.1.1.0 | Vulnerable | Valve Software |
| cpe:2.3:a:valve_software:half-life_dedicated_server:*:*:*:*:*:*:*:* | up to 3.1 | Vulnerable | Valve Software |
| cpe:2.3:a:valve_software:half-life_dedicated_server:3.1.3:*:*:*:*:*:*:* | 3.1.3 | Vulnerable | Valve Software |
- cpe:2.3:a:valve_software:half-life:1.1.0.4:*:linux:*:*:*:*:* Versions 1.1.0.4 Vulnerable ·Valve Software
- cpe:2.3:a:valve_software:half-life:1.1.0.4:*:windows:*:*:*:*:* Versions 1.1.0.4 Vulnerable ·Valve Software
- cpe:2.3:a:valve_software:half-life:1.1.0.8:*:*:*:*:*:*:* Versions 1.1.0.8 Vulnerable ·Valve Software
- cpe:2.3:a:valve_software:half-life:1.1.0.9:*:*:*:*:*:*:* Versions 1.1.0.9 Vulnerable ·Valve Software
- cpe:2.3:a:valve_software:half-life:1.1.1.0:*:*:*:*:*:*:* Versions 1.1.1.0 Vulnerable ·Valve Software
- cpe:2.3:a:valve_software:half-life_dedicated_server:*:*:*:*:*:*:*:* Versions up to 3.1 Vulnerable ·Valve Software
- cpe:2.3:a:valve_software:half-life_dedicated_server:3.1.3:*:*:*:*:*:*:* Versions 3.1.3 Vulnerable ·Valve Software
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2002-0964
- 2026-10-03 Alias added: GHSA-p2q4-m99w-xgjx
References
More Valve Software Half-life vulnerabilities
- TI-2001-00353 Buffer overflows in Sierra Half-Life build 1573 and earlier allow remote attackers to… CVSS 2.0HIGH 7.5
- TI-2001-00920 Buffer overflow in client for Half-Life 1.1.0.8 and earlier allows malicious remote… CVSS 2.0HIGH 7.5
- TI-2004-00665 The Half-Life engine before July 7 2004 allows remote attackers to cause a denial of… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2002-0964 · CVE Program
- CVE-2002-0964 · NVD
- FIRST EPSS
- GHSA-p2q4-m99w-xgjx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences