High severity7.0NVD Advisory· Published Apr 9, 2021· Updated Jun 17, 2026
CVE-2021-29221
CVE-2021-29221
Description
A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3. By adding files to an existing installation's directory, a local attacker could hijack accounts of other users running Erlang programs or possibly coerce a service running with "erlsrv.exe" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.
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Affected products
3cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*range: <23.2.3
- (no CPE)range: <23.2.3
- Erlang Project/Erlang/OTPv5Range: < 23.2.3
Patches
Vulnerability mechanics
References
2- deepsurface.com/deepsurface-security-advisory-local-privilege-escalation-in-erlang-on-windows-cve-2021-29221/nvdExploitThird Party Advisory
- github.com/erlang/otp/releases/tag/OTP-23.2.3nvdThird Party Advisory
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