CVE-2026-13574 MEDIUM

CVE-2026-13574: llvm llvm-project Bitcode File IntrinsicInst.cpp getBasePtr heap-based overflow

Vendor Llvm
Product llvm-project
Weakness CWE-122
Published June 29, 2026
Last update June 29, 2026

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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. The project was informed of the problem early through an issue report but has not responded yet.

Key dates

02Disclosure timeline

June 29, 2026 CVE published