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Linux Distros Unpatched Vulnerability : CVE-2026-3012

high Nessus Plugin ID 317041

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 Samba's certificate auto-enrollment Group Policy handling. When certificate auto- enrollment is enabled, Samba may retrieve a CA certificate over an unencrypted HTTP connection and install it into the local trust store without proper verification. An attacker with the ability to intercept or redirect network traffic could exploit this behavior to supply a malicious certificate authority certificate, potentially allowing interception or spoofing of trusted communications. (CVE-2026-3012)

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-2026-3012

https://security-tracker.debian.org/tracker/CVE-2026-3012

Plugin Details

Severity: High

ID: 317041

File Name: unpatched_CVE_2026_3012.nasl

Version: 1.3

Type: Local

Agent: unix

Family: Misc.

Published: 5/27/2026

Updated: 5/29/2026

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

Risk Information

VPR

Risk Factor: High

Score: 7.9

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-3012

CVSS v3

Risk Factor: High

Base Score: 8

Temporal Score: 7.3

Vector: CVSS:3.0/AV:A/AC:H/PR:N/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:debian:debian_linux:11.0, p-cpe:/a:centos:centos:samba-ldb-ldap-modules, p-cpe:/a:centos:centos:samba-dc, p-cpe:/a:redhat:enterprise_linux:samba-client-libs, p-cpe:/a:centos:centos:samba-test, p-cpe:/a:redhat:enterprise_linux:samba-ldb-ldap-modules, p-cpe:/a:centos:centos:samba-python-test, p-cpe:/a:redhat:enterprise_linux:samba-pidl, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:samba-vfs-glusterfs, p-cpe:/a:centos:centos:ctdb, p-cpe:/a:redhat:enterprise_linux:samba-common-libs, p-cpe:/a:redhat:enterprise_linux:samba-tools, p-cpe:/a:redhat:enterprise_linux:ctdb, p-cpe:/a:centos:centos:samba-test-devel, p-cpe:/a:centos:centos:python3-samba-test, p-cpe:/a:redhat:enterprise_linux:libnetapi-devel, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:centos:centos:samba-tools, p-cpe:/a:redhat:enterprise_linux:libsmbclient, p-cpe:/a:redhat:enterprise_linux:samba-test-devel, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:samba, p-cpe:/a:centos:centos:samba-krb5-printing, p-cpe:/a:centos:centos:python3-samba-devel, p-cpe:/a:redhat:enterprise_linux:python3-samba-dc, p-cpe:/a:redhat:enterprise_linux:samba-common, p-cpe:/a:centos:centos:samba-dc-libs, p-cpe:/a:redhat:enterprise_linux:samba-vfs-glusterfs, p-cpe:/a:centos:centos:samba-winbind-krb5-locator, p-cpe:/a:centos:centos:samba-python, p-cpe:/a:redhat:enterprise_linux:samba-winbind-clients, p-cpe:/a:redhat:enterprise_linux:samba-libs, p-cpe:/a:centos:centos:python3-ldb, p-cpe:/a:centos:centos:samba-devel, p-cpe:/a:redhat:enterprise_linux:samba-winexe, p-cpe:/a:redhat:enterprise_linux:samba-test-libs, p-cpe:/a:centos:centos:samba-common-tools, p-cpe:/a:centos:centos:samba, p-cpe:/a:centos:centos:samba-winbind-modules, p-cpe:/a:centos:centos:libwbclient-devel, p-cpe:/a:centos:centos:samba-usershares, p-cpe:/a:centos:centos:samba-pidl, p-cpe:/a:redhat:enterprise_linux:samba-common-tools, p-cpe:/a:redhat:enterprise_linux:samba-python, p-cpe:/a:redhat:enterprise_linux:libsmbclient-devel, p-cpe:/a:redhat:enterprise_linux:python3-samba, p-cpe:/a:centos:centos:python3-samba, p-cpe:/a:redhat:enterprise_linux:python3-samba-test, p-cpe:/a:redhat:enterprise_linux:samba-krb5-printing, p-cpe:/a:redhat:enterprise_linux:samba-winbind-modules, p-cpe:/a:centos:centos:samba-dcerpc, p-cpe:/a:centos:centos:libldb, p-cpe:/a:redhat:enterprise_linux:samba-test, p-cpe:/a:redhat:enterprise_linux:samba-python-test, p-cpe:/a:redhat:enterprise_linux:python3-ldb, p-cpe:/a:redhat:enterprise_linux:libldb-devel, p-cpe:/a:centos:centos:samba-vfs-iouring, p-cpe:/a:centos:centos:samba-client-libs, p-cpe:/a:centos:centos:libnetapi, p-cpe:/a:redhat:enterprise_linux:ctdb-devel, p-cpe:/a:debian:debian_linux:samba, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:libwbclient-devel, p-cpe:/a:redhat:enterprise_linux:libwbclient, p-cpe:/a:centos:centos:ldb-tools, p-cpe:/a:centos:centos:samba-common-libs, p-cpe:/a:centos:centos:samba-winbind-clients, p-cpe:/a:redhat:enterprise_linux:samba-devel, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:samba-dc, p-cpe:/a:redhat:enterprise_linux:libldb, p-cpe:/a:centos:centos:python3-samba-dc, p-cpe:/a:redhat:enterprise_linux:samba-vfs-iouring, p-cpe:/a:centos:centos:samba-winbind, p-cpe:/a:redhat:enterprise_linux:samba-client, p-cpe:/a:centos:centos:samba-winexe, p-cpe:/a:centos:centos:libsmbclient-devel, p-cpe:/a:centos:centos:libsmbclient, p-cpe:/a:centos:centos:libldb-devel, p-cpe:/a:centos:centos:samba-libs, p-cpe:/a:redhat:enterprise_linux:libnetapi, p-cpe:/a:centos:centos:ctdb-devel, p-cpe:/a:redhat:enterprise_linux:samba-dc-libs, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:samba-dcerpc, p-cpe:/a:centos:centos:libwbclient, p-cpe:/a:redhat:enterprise_linux:samba-winbind-krb5-locator, p-cpe:/a:centos:centos:samba-client, p-cpe:/a:centos:centos:samba-test-libs, p-cpe:/a:redhat:enterprise_linux:samba-usershares, p-cpe:/a:redhat:enterprise_linux:ldb-tools, p-cpe:/a:centos:centos:libnetapi-devel, p-cpe:/a:redhat:enterprise_linux:ctdb-tests, p-cpe:/a:redhat:enterprise_linux:samba-winbind, p-cpe:/a:centos:centos:samba-common, p-cpe:/a:redhat:enterprise_linux:samba-gpupdate, p-cpe:/a:centos:centos:ctdb-tests, p-cpe:/a:centos:centos:samba-gpupdate, p-cpe:/a:redhat:enterprise_linux:python3-samba-devel

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

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2026-3012