Linux Distros Unpatched Vulnerability : CVE-2026-111269

medium Nessus Plugin ID 366362

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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.

- libical through 4.0.6 contains a heap-based out-of-bounds read in icalvalue_decode_ical_string() in src/libical/icalvalue.c when decoding input ending in a backslash. Attackers can supply escaped iCalendar text with a trailing backslash, causing the loop to read past the terminator and crash the application or leak adjacent heap memory. (CVE-2026-111269)

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: Medium

ID: 366362

File Name: unpatched_CVE_2026_111269.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 10/16/2026

Updated: 10/17/2026

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: 51.43

CVSS v2

Risk Factor: Low

Base Score: 2.9

Temporal Score: 2.5

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

CVSS Score Source: CVE-2026-111269

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.6

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 4.4

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:centos:centos:7, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:debian:debian_linux:14.0, cpe:/o:redhat:enterprise_linux:10, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:canonical:ubuntu_linux:libical, p-cpe:/a:centos:centos:compat-libical1, p-cpe:/a:centos:centos:libical-devel, p-cpe:/a:centos:centos:libical-glib-devel, p-cpe:/a:centos:centos:libical-glib-doc, p-cpe:/a:centos:centos:libical-glib, p-cpe:/a:centos:centos:libical, p-cpe:/a:debian:debian_linux:libical3, p-cpe:/a:redhat:enterprise_linux:compat-libical1, p-cpe:/a:redhat:enterprise_linux:libical-devel, p-cpe:/a:redhat:enterprise_linux:libical-glib-devel, p-cpe:/a:redhat:enterprise_linux:libical-glib-doc, p-cpe:/a:redhat:enterprise_linux:libical-glib, p-cpe:/a:redhat:enterprise_linux:libical

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: 10/15/2026

Reference Information

CVE: CVE-2026-111269

Detections

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