CVE-2017-11742: Libexpat Project Libexpat

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The writeRandomBytes_RtlGenRandom function in xmlparse.c in libexpat in Expat 2.2.1 and 2.2.2 on Windows allows local users to gain privileges via a Trojan horse ADVAPI32.DLL in the current working directory because of an untrusted search path, aka DLL hijacking.

Affected products

• Libexpat Project Libexpat: version 2.2.1 only; version 2.2.2 only

Published 2017-07-30. Last modified 2026-06-17.