Linux Distros Unpatched Vulnerability : CVE-2026-88383

medium Nessus Plugin ID 349811

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 4.0.6 contains an incompatible function pointer in icalparameter_string_to_kind(). When parsing iCalendar data containing a parameterized property, the function passes icalparameter_compare_kind_map() to bsearch() through an incompatible comparator function pointer type. bsearch() invokes the callback through the mismatched type, resulting in undefined behavior and process termination, leading to denial of service. (CVE-2026-88383)

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: 349811

File Name: unpatched_CVE_2026_88383.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 9/24/2026

Updated: 9/25/2026

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

Percentile: 23.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.3

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

CVSS Score Source: CVE-2026-88383

CVSS v3

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 5.7

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

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

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: 9/24/2026

Reference Information

CVE: CVE-2026-88383

Detections

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