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CVE-2026-13574

llvm llvm-project Bitcode File IntrinsicInst.cpp getBasePtr heap-based overflow

CVSS 4.8 MEDIUMEPSS 0.1%CWE-119CWE-122
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 4.8EPSS 0.1%KEV nãoPoC públicaNuclei Metasploit Patch
Lifecycle
29 Jun 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
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
Affected products
llvm · llvm-project
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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