What is CVE-2023-30382?

CVE-2023-30382 is a high-severity vulnerability in Valvesoftware Half-Life, classified under Out-of-bounds Write. CVSS score: 7.3/10. Published 2023-05-23.

How severe is CVE-2023-30382?

High severity. CVSS v3 base score is 7.3 out of 10.

Buffer overflow in Valvesoftware Half-Life

CVE-2023-30382

A buffer overflow in the component hl.exe of Valve Half-Life up to 5433873 allows attackers to execute arbitrary code and escalate privileges by supplying crafted parameters.

Vulnerability class: Buffer Overflow

Published 2023-05-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (11.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Valvesoftware Half-Life

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

labs.jumpsec.com/advisory-cve-2023-30382-half-life-local-privilege-escalation/ (Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2023-30382?: CVE-2023-30382 is a high-severity vulnerability in Valvesoftware Half-Life, classified under Out-of-bounds Write. CVSS score: 7.3/10. Published 2023-05-23.
How severe is CVE-2023-30382?: High severity. CVSS v3 base score is 7.3 out of 10.