Linux Distros Unpatched Vulnerability : CVE-2026-19550

high Nessus Plugin ID 334676

Language:

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 FreeIPA. The trust-fetch-domains command is gated by a read-only permission on the trust object rather than a trust-administration permission, allowing an authenticated, non-privileged IPA user to trigger a privileged Active Directory trust refresh using an attacker-supplied server and credentials, resulting in unauthorized, attacker-controlled modification of trusted-domain and ID-range identity data in the IPA LDAP directory. (CVE-2026-19550)

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: High

ID: 334676

File Name: unpatched_CVE_2026_19550.nasl

Version: 1.4

Type: Local

Agent: unix

Family: Misc.

Published: 8/12/2026

Updated: 8/21/2026

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, 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: Medium

Base Score: 6.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-19550

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-: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: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:freeipa, p-cpe:/a:centos:centos:ipa-admintools, p-cpe:/a:centos:centos:ipa-client-common, p-cpe:/a:centos:centos:ipa-client-encrypted-dns, p-cpe:/a:centos:centos:ipa-client-epn, p-cpe:/a:centos:centos:ipa-client-samba, p-cpe:/a:centos:centos:ipa-client, p-cpe:/a:centos:centos:ipa-common, p-cpe:/a:centos:centos:ipa-python-compat, p-cpe:/a:centos:centos:ipa-python, p-cpe:/a:centos:centos:ipa-selinux-luna, p-cpe:/a:centos:centos:ipa-selinux-nfast, p-cpe:/a:centos:centos:ipa-selinux, p-cpe:/a:centos:centos:ipa-server-common, p-cpe:/a:centos:centos:ipa-server-dns, p-cpe:/a:centos:centos:ipa-server-encrypted-dns, p-cpe:/a:centos:centos:ipa-server-trust-ad, p-cpe:/a:centos:centos:ipa-server, p-cpe:/a:centos:centos:ipa, p-cpe:/a:centos:centos:python2-ipaclient, p-cpe:/a:centos:centos:python2-ipalib, p-cpe:/a:centos:centos:python2-ipaserver, p-cpe:/a:centos:centos:python3-ipaclient, p-cpe:/a:centos:centos:python3-ipalib, p-cpe:/a:centos:centos:python3-ipaserver, p-cpe:/a:centos:centos:python3-ipatests, p-cpe:/a:debian:debian_linux:freeipa, p-cpe:/a:redhat:enterprise_linux:ipa-admintools, p-cpe:/a:redhat:enterprise_linux:ipa-client-common, p-cpe:/a:redhat:enterprise_linux:ipa-client-encrypted-dns, p-cpe:/a:redhat:enterprise_linux:ipa-client-epn, p-cpe:/a:redhat:enterprise_linux:ipa-client-samba, p-cpe:/a:redhat:enterprise_linux:ipa-client, p-cpe:/a:redhat:enterprise_linux:ipa-common, p-cpe:/a:redhat:enterprise_linux:ipa-python-compat, p-cpe:/a:redhat:enterprise_linux:ipa-python, p-cpe:/a:redhat:enterprise_linux:ipa-selinux-luna, p-cpe:/a:redhat:enterprise_linux:ipa-selinux-nfast, p-cpe:/a:redhat:enterprise_linux:ipa-selinux, p-cpe:/a:redhat:enterprise_linux:ipa-server-common, p-cpe:/a:redhat:enterprise_linux:ipa-server-dns, p-cpe:/a:redhat:enterprise_linux:ipa-server-encrypted-dns, p-cpe:/a:redhat:enterprise_linux:ipa-server-trust-ad, p-cpe:/a:redhat:enterprise_linux:ipa-server, p-cpe:/a:redhat:enterprise_linux:ipa, p-cpe:/a:redhat:enterprise_linux:python2-ipaclient, p-cpe:/a:redhat:enterprise_linux:python2-ipalib, p-cpe:/a:redhat:enterprise_linux:python2-ipaserver, p-cpe:/a:redhat:enterprise_linux:python3-ipaclient, p-cpe:/a:redhat:enterprise_linux:python3-ipalib, p-cpe:/a:redhat:enterprise_linux:python3-ipaserver, p-cpe:/a:redhat:enterprise_linux:python3-ipatests

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/11/2026

Reference Information

CVE: CVE-2026-19550

Detections

Analytics