Linux Distros Unpatched Vulnerability : CVE-2026-115386

low Nessus Plugin ID 370959

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.

- Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 contains an information disclosure vulnerability in the WASIp1 fd_readdir implementation that copies uninitialized struct padding into guest memory. Guests with a preopened directory can list entries to receive three bytes of leftover host stack or heap memory per directory entry. (CVE-2026-115386)

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-2026-115386

https://security-tracker.debian.org/tracker/CVE-2026-115386

https://ubuntu.com/security/CVE-2026-115386

Plugin Details

Severity: Low

ID: 370959

File Name: unpatched_CVE_2026_115386.nasl

Version: 1.11

Type: Local

Agent: unix

Family: Misc.

Published: 10/23/2026

Updated: 11/10/2026

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: 2.1

Temporal Score: 1.8

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

CVSS Score Source: CVE-2026-115386

CVSS v3

Risk Factor: Low

Base Score: 2.6

Temporal Score: 2.4

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

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

CVSS v4

Risk Factor: Low

Base Score: 2.1

Threat Score: 0.5

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/a:redhat:enterprise_linux:10, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.10, cpe:/o:debian:debian_linux:13.0, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:canonical:ubuntu_linux:rust-wasmtime, p-cpe:/a:debian:debian_linux:rust-wasmtime, p-cpe:/a:redhat:enterprise_linux:tree-sitter, p-cpe:/a:redhat:enterprise_linux:virt-firmware-rs

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: 10/22/2026

Reference Information

CVE: CVE-2026-115386