Read the docs
TI-2001-00920 Aliases CVE-2001-0964GHSA-rqf6-27m3-3pm2

Buffer overflow in client for Half-Life 1.1.0.8 and earlier allows malicious remote…

Priority LOW 37Published · 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
Partial · Partial · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

Buffer overflow in client for Half-Life 1.1.0.8 and earlier allows malicious remote servers to execute arbitrary code via a long console command.

Why it matters now

EPSS 0.02061 81st 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:valve_software:half-life:*:*:*:*:*:*:*:*up to 1.1.0.8VulnerableValve Software
  • cpe:2.3:a:valve_software:half-life:*:*:*:*:*:*:*:* Versions up to 1.1.0.8 Vulnerable ·Valve Software

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2001-0964
  2. 2026-10-03 Alias added: GHSA-rqf6-27m3-3pm2

References

Advisory 1

  • TI-2001-00353 Buffer overflows in Sierra Half-Life build 1573 and earlier allow remote attackers to… CVSS 2.0HIGH 7.5
  • TI-2002-00936 Half-Life Server 1.1.1.0 and earlier allows remote attackers to cause a denial of service… CVSS 2.0MEDIUM 5.0
  • 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences