CVE-2026-13573
LOW Exploitation: PoC
3.3
CVSS 3.1
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 project was informed of the problem early through an issue report but has not responded yet.
Metadata
Severity & Metrics
3.3
LOW CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
SSVC — CISA Coordinator
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| llvm | llvm-project | — | 22.1.0, 22.1.1, 22.1.2, 22.1.3 … |
Weakness (CWE)
CVSS scores (4)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 4.8 | MEDIUM | 4.0 | cna | 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 |
| 3.3 | LOW | 3.1 | cna | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R |
| 3.3 | LOW | 3.0 | cna | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R |
| 1.7 | N/D | 2.0 | cna | AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR |
References (7)
- VDB-374581 | llvm llvm-project ValueSymbolTable ValueSymbolTable.cpp insert stack-based overflow https://vuldb.com/vuln/374581
- VDB-374581 | CTI Indicators (IOB, IOC, IOA) https://vuldb.com/vuln/374581/cti
- CVE-2026-13573 | CVE Analysis and Report https://vuldb.com/cve/CVE-2026-13573
- Submit #844457 | LLVM LLVM Project commit 3b3a3c2 Stack-based Buffer Overflow https://vuldb.com/submit/844457
- https://github.com/llvm/llvm-project/issues/199187
- https://github.com/user-attachments/files/28141697/poc.zip
- https://github.com/llvm/llvm-project/