CVE-2023-35855
CVE-2023-35855 is a critical-severity vulnerability in Valvesoftware Counter-strike with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Valvesoftware Counter-strike
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2023-35855?
- 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.
- How severe is CVE-2023-35855?
- CVE-2023-35855 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-35855 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-35855?
- CVE-2023-35855 affects Valvesoftware Counter-strike. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-35855?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2023-35855 published?
- CVE-2023-35855 was published on 2023-06-19 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:valvesoftware:counter-strike:*:*:*:*:*:*:*:*
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