What is CVE-2020-12242?

CVE-2020-12242 is a high-severity vulnerability in Valvesoftware Source, classified under OS Command Injection. CVSS score: 7.8/10. Published 2020-04-27.

How severe is CVE-2020-12242?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2020-12242 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Valvesoftware Source

CVE-2020-12242

Valve Source allows local users to gain privileges by writing to the /tmp/hl2_relaunch file, which is later executed in the context of a different user account.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.011 (61.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Valvesoftware Source
N/a — versions n/a

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-12242?: CVE-2020-12242 is a high-severity vulnerability in Valvesoftware Source, classified under OS Command Injection. CVSS score: 7.8/10. Published 2020-04-27.
How severe is CVE-2020-12242?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-12242 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.