CVE-2026-13574
LOWllvm llvm-project Bitcode File IntrinsicInst.cpp getBasePtr heap-based overflow
Title source: cnaDescription
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.
References (7)
Core 7
Core References
Third Party Advisory third-party-advisory
CVE-2026-13574 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-13574
Third Party Advisory third-party-advisory
Submit #844468 | LLVM LLVM Project commit 3b3a3c2 Heap-based Buffer Overflow
https://vuldb.com/submit/844468
Issue Tracking issue-tracking
https://github.com/llvm/llvm-project/issues/199191
Product product
https://github.com/llvm/llvm-project/
Exploit broken-link
exploit
https://github.com/user-attachments/files/28142619/poc.zip
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-374582 | llvm llvm-project Bitcode File IntrinsicInst.cpp getBasePtr heap-based overflow
https://vuldb.com/vuln/374582
Signature, Permissions Required signature
permissions-required
VDB-374582 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/374582/cti
Scores
CVSS v3
3.3
EPSS
0.0012
EPSS Percentile
2.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-119
CWE-122
Status
published
Products (7)
llvm/llvm-project
22.1.0
llvm/llvm-project
22.1.1
llvm/llvm-project
22.1.2
llvm/llvm-project
22.1.3
llvm/llvm-project
22.1.4
llvm/llvm-project
22.1.5
llvm/llvm-project
22.1.6
Published
Jun 29, 2026
Tracked Since
Jun 29, 2026