A buffer overflow in Counter-Strike through 8684 allows a game server to execute…
Priority MEDIUM 51CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
A buffer overflow in Counter-Strike through 8684 allows a game server to execute arbitrary code on a remote client's machine by modifying the lservercfgfile console variable.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01069 65th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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 · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:valvesoftware:counter-strike:*:*:*:*:*:*:*:* | up to 8684 | Vulnerable | Valvesoftware |
- cpe:2.3:a:valvesoftware:counter-strike:*:*:*:*:*:*:*:* Versions up to 8684 Vulnerable ·Valvesoftware
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-35855
- 2026-10-03 Alias added: GHSA-4426-3833-j328
References
More Valvesoftware Counter-strike vulnerabilities
- TI-2023-19710 A directory traversal vulnerability in Valve Counter-Strike 8684 allows a client (with… CVSS 3.1HIGH 7.5
- TI-2008-06891 Valve Software Half-Life Counter-Strike 1.6 allows remote attackers to cause a denial of… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2023-35855 · CVE Program
- CVE-2023-35855 · NVD
- FIRST EPSS
- GHSA-4426-3833-j328 · GitHub Advisory Database · CC BY 4.0
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