Detections
Analytics
Linux Distros Unpatched Vulnerability : CVE-2026-13573
medium Nessus Plugin ID 323920
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Synopsis
The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.Description
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.- 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. (CVE-2026-13573)
Note that Nessus relies on the presence of the package as reported by the vendor.
Solution
There is no known solution at this time.See Also
https://access.redhat.com/security/cve/cve-2026-13573
Plugin Details
Severity: Medium
ID: 323920
File Name: unpatched_CVE_2026_13573.nasl
Version: 1.8
Type: Local
Agent: unix
Family: Misc.
Published: 6/30/2026
Updated: 7/20/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 1.2
Percentile: 0.01
CVSS v2
Risk Factor: Low
Base Score: 1.7
Temporal Score: 1.4
Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:P
CVSS Score Source: CVE-2026-13573
CVSS v3
Risk Factor: Low
Base Score: 3.3
Temporal Score: 3.1
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 4.8
Threat Score: 1.9
Threat Vector: CVSS:4.0/E:P
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
Vulnerability Information
CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:redhat:enterprise_linux:clang-tools-extra, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:debian:debian_linux:llvm-toolchain-22, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:redhat:enterprise_linux:libomp, p-cpe:/a:centos:centos:clang, p-cpe:/a:redhat:enterprise_linux:clang-libs, p-cpe:/a:redhat:enterprise_linux:lldb, p-cpe:/a:redhat:enterprise_linux:lld-devel, p-cpe:/a:redhat:enterprise_linux:llvm-static, p-cpe:/a:centos:centos:clang-resource-filesystem, p-cpe:/a:centos:centos:clang-devel, p-cpe:/a:centos:centos:python3-clang, p-cpe:/a:centos:centos:lld-devel, p-cpe:/a:centos:centos:lld-libs, p-cpe:/a:centos:centos:clang-tools-extra, p-cpe:/a:redhat:enterprise_linux:llvm-toolset, p-cpe:/a:debian:debian_linux:llvm-toolchain-19, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:centos:centos:llvm-toolset, p-cpe:/a:redhat:enterprise_linux:clang, p-cpe:/a:redhat:enterprise_linux:clang-analyzer, p-cpe:/a:redhat:enterprise_linux:compiler-rt, p-cpe:/a:redhat:enterprise_linux:python3-clang, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:lldb-devel, p-cpe:/a:canonical:ubuntu_linux:llvm-toolchain-21, p-cpe:/a:centos:centos:llvm, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:python3-lit, p-cpe:/a:centos:centos:llvm-devel, p-cpe:/a:centos:centos:llvm-filesystem, p-cpe:/a:centos:centos:clang-libs, p-cpe:/a:redhat:enterprise_linux:lld-libs, p-cpe:/a:redhat:enterprise_linux:python3-lldb, p-cpe:/a:redhat:enterprise_linux:lld, cpe:/o:redhat:enterprise_linux:8, cpe:/o:debian:debian_linux:13.0, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:centos:centos:lldb, p-cpe:/a:centos:centos:llvm-test, p-cpe:/a:redhat:enterprise_linux:llvm-libs, p-cpe:/a:redhat:enterprise_linux:lldb-devel, p-cpe:/a:redhat:enterprise_linux:python3-lit, p-cpe:/a:canonical:ubuntu_linux:llvm-toolchain-18, p-cpe:/a:canonical:ubuntu_linux:llvm-toolchain-19, p-cpe:/a:centos:centos:compiler-rt, p-cpe:/a:centos:centos:llvm-libs, p-cpe:/a:centos:centos:python3-lldb, p-cpe:/a:centos:centos:llvm-static, p-cpe:/a:centos:centos:libomp, p-cpe:/a:redhat:enterprise_linux:llvm-test, p-cpe:/a:debian:debian_linux:llvm-toolchain-18, p-cpe:/a:centos:centos:lld, p-cpe:/a:redhat:enterprise_linux:llvm, p-cpe:/a:redhat:enterprise_linux:llvm-googletest, p-cpe:/a:redhat:enterprise_linux:clang-devel, p-cpe:/a:redhat:enterprise_linux:llvm-devel, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:centos:centos:libomp-devel, p-cpe:/a:redhat:enterprise_linux:libomp-devel, p-cpe:/a:centos:centos:llvm-googletest, p-cpe:/a:redhat:enterprise_linux:llvm-doc, p-cpe:/a:centos:centos:git-clang-format, p-cpe:/a:centos:centos:clang-analyzer, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:centos:centos:llvm-doc, p-cpe:/a:canonical:ubuntu_linux:llvm-toolchain-22, p-cpe:/a:redhat:enterprise_linux:clang-resource-filesystem, p-cpe:/a:debian:debian_linux:llvm-toolchain-21, p-cpe:/a:redhat:enterprise_linux:git-clang-format, p-cpe:/a:redhat:enterprise_linux:llvm-filesystem
Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 6/29/2026
Reference Information
CVE: CVE-2026-13573