CVE-2026-13574: Llvm Llvm-Project

Low severity, CVSS 3.3. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability was determined in llvm llvm-project up to 22.1.6. This impacts the function GCRelocateInst::getBasePtr in the library llvm/lib/IR/IntrinsicInst.cpp of the component Bitcode File Handler. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. There are still doubts about whether this vulnerability truly exists. The LLVM project explains, that the reported behavior is outside its documented security scope and therefore not considered a security vulnerability.

Affected products

• Llvm Llvm-Project: version 22.1.0 only; version 22.1.1 only; version 22.1.2 only; version 22.1.3 only; version 22.1.4 only; version 22.1.5 only; …

Published 2026-06-29. Last modified 2026-07-07.