Linux Distros Unpatched Vulnerability : CVE-2026-115455

critical Nessus Plugin ID 374096

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 flaw was found in GCC libstdc++. When an application extracts data into a bitset from a wide-character stream, internal stack memory allocation fails to properly account for character size and alignment. An attacker capable of supplying crafted input to an affected application could trigger a stack-based buffer overflow leading denial of service (DoS). (CVE-2026-115455)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: Critical

ID: 374096

File Name: unpatched_CVE_2026_115455.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 10/30/2026

Updated: 10/30/2026

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: 3.5

Percentile: 51.44

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2026-115455

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:redhat:enterprise_linux:cpp, p-cpe:/a:redhat:enterprise_linux:gcc-c%2b%2b, p-cpe:/a:redhat:enterprise_linux:gcc-gfortran, p-cpe:/a:redhat:enterprise_linux:gcc-offload-amdgcn, p-cpe:/a:redhat:enterprise_linux:gcc-offload-nvptx, p-cpe:/a:redhat:enterprise_linux:gcc-plugin-annobin, p-cpe:/a:redhat:enterprise_linux:gcc-plugin-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-gcc-c%2b%2b, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-gcc-gfortran, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-gcc-plugin-annobin, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-gcc-plugin-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-gcc, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libasan-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libatomic-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libgccjit-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libgccjit, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libitm-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-liblsan-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libquadmath-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libstdc%2b%2b-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libstdc%2b%2b-docs, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libtsan-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-libubsan-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-15-offload-nvptx, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-gcc, p-cpe:/a:redhat:enterprise_linux:gcc, p-cpe:/a:redhat:enterprise_linux:libasan, p-cpe:/a:redhat:enterprise_linux:libatomic, p-cpe:/a:redhat:enterprise_linux:libgcc, p-cpe:/a:redhat:enterprise_linux:libgccjit-devel, p-cpe:/a:redhat:enterprise_linux:libgccjit, p-cpe:/a:redhat:enterprise_linux:libgfortran-static, p-cpe:/a:redhat:enterprise_linux:libgfortran, p-cpe:/a:redhat:enterprise_linux:libgomp-offload-amdgcn, p-cpe:/a:redhat:enterprise_linux:libgomp-offload-nvptx, p-cpe:/a:redhat:enterprise_linux:libgomp, p-cpe:/a:redhat:enterprise_linux:libhwasan, p-cpe:/a:redhat:enterprise_linux:libitm-devel, p-cpe:/a:redhat:enterprise_linux:libitm, p-cpe:/a:redhat:enterprise_linux:liblsan, p-cpe:/a:redhat:enterprise_linux:libquadmath-devel, p-cpe:/a:redhat:enterprise_linux:libquadmath-static, p-cpe:/a:redhat:enterprise_linux:libquadmath, p-cpe:/a:redhat:enterprise_linux:libstdc%2b%2b-devel, p-cpe:/a:redhat:enterprise_linux:libstdc%2b%2b-docs, p-cpe:/a:redhat:enterprise_linux:libstdc%2b%2b-static, p-cpe:/a:redhat:enterprise_linux:libstdc%2b%2b, p-cpe:/a:redhat:enterprise_linux:libtsan, p-cpe:/a:redhat:enterprise_linux:libubsan, p-cpe:/a:redhat:enterprise_linux:mingw32-cpp, p-cpe:/a:redhat:enterprise_linux:mingw32-gcc-c%2b%2b, p-cpe:/a:redhat:enterprise_linux:mingw32-gcc, p-cpe:/a:redhat:enterprise_linux:mingw32-libgcc, p-cpe:/a:redhat:enterprise_linux:mingw32-libstdc%2b%2b, p-cpe:/a:redhat:enterprise_linux:mingw64-cpp, p-cpe:/a:redhat:enterprise_linux:mingw64-gcc-c%2b%2b, p-cpe:/a:redhat:enterprise_linux:mingw64-gcc, p-cpe:/a:redhat:enterprise_linux:mingw64-libgcc, p-cpe:/a:redhat:enterprise_linux:mingw64-libstdc%2b%2b

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: 10/30/2026

Reference Information

CVE: CVE-2026-115455

Detections

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