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Description

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.

PUBLISHED Reserved 2026-06-28 | Published 2026-06-29 | Updated 2026-07-07 | Assigner VulDB




MEDIUM: 4.8CVSS: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
LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
1.7AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

22.1.0
affected

22.1.1
affected

22.1.2
affected

22.1.3
affected

22.1.4
affected

22.1.5
affected

22.1.6
affected

Timeline

2026-06-28:Advisory disclosed
2026-06-28:VulDB entry created
2026-07-07:VulDB entry last update

Credits

TYGLS (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/374581 (VDB-374581 | llvm llvm-project ValueSymbolTable ValueSymbolTable.cpp insert stack-based overflow) vdb-entry technical-description

vuldb.com/vuln/374581/cti (VDB-374581 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-13573 (CVE-2026-13573 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/844457 (Submit #844457 | LLVM LLVM Project commit 3b3a3c2 Stack-based Buffer Overflow) third-party-advisory

github.com/llvm/llvm-project/issues/199187 issue-tracking

github.com/user-attachments/files/28141697/poc.zip broken-link exploit

github.com/llvm/llvm-project/ product

cve.org (CVE-2026-13573)

nvd.nist.gov (CVE-2026-13573)

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