CVE-2020-12242
CVSS v3
7.8
HIGH
EPSS Score
1.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
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.
Technical details
- Published
- 2020-04-27
- Exploit-DB
- EDB-48387
Frequently asked questions
What is 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.
Is CVE-2020-12242 actively exploited?
Active exploitation of CVE-2020-12242 has not been confirmed. Its EPSS score was 1.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-12242?
CVE-2020-12242 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2020-12242 affecting your environment?
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