CVE-2026-13573: Llvm Llvm-Project

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

A vulnerability was found in llvm llvm-project up to 22.1.6. This affects the function llvm::StringMap::insert in the library /lib/IR/ValueSymbolTable.cpp of the component ValueSymbolTable Module. The manipulation results in stack-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The presence of this vulnerability remains uncertain at this time. 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.