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Linux Distros Unpatched Vulnerability : CVE-2026-34073

medium Nessus Plugin ID 304412

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.

 - cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.
 Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the peer name presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate against a wildcard leaf certificate for *.example.com, even if the leaf's parent certificate (or upwards) contained an excluded subtree constraint for bar.example.com. This issue has been patched in version 46.0.6. (CVE-2026-34073)

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-2026-34073

https://security-tracker.debian.org/tracker/CVE-2026-34073

Plugin Details

Severity: Medium

ID: 304412

File Name: unpatched_CVE_2026_34073.nasl

Version: 1.2

Type: local

Agent: unix

Family: Misc.

Published: 3/31/2026

Updated: 4/1/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.4

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

CVSS Score Source: CVE-2026-34073

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.9

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: p-cpe:/a:centos:centos:fence-agents-ilo2, p-cpe:/a:redhat:enterprise_linux:fence-agents-aws, p-cpe:/a:centos:centos:fence-virtd-tcp, p-cpe:/a:redhat:enterprise_linux:fence-agents-rsb, p-cpe:/a:centos:centos:fence-agents-ipdu, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:redhat:enterprise_linux:fence-agents-kubevirt, p-cpe:/a:redhat:enterprise_linux:fence-agents-apc, p-cpe:/a:redhat:enterprise_linux:fence-agents-common, p-cpe:/a:centos:centos:fence-agents-wti, p-cpe:/a:redhat:enterprise_linux:fence-agents-emerson, p-cpe:/a:redhat:enterprise_linux:fence-agents-lpar, p-cpe:/a:redhat:enterprise_linux:fence-virtd-cpg, p-cpe:/a:centos:centos:fence-agents-lpar, p-cpe:/a:centos:centos:fence-agents-openstack, p-cpe:/a:redhat:enterprise_linux:fence-agents-compute, cpe:/o:centos:centos:8, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:redhat:enterprise_linux:fence-agents, p-cpe:/a:centos:centos:fence-agents-rhevm, p-cpe:/a:centos:centos:fence-agents-vmware-rest, p-cpe:/a:redhat:enterprise_linux:fence-agents-vmware-rest, p-cpe:/a:centos:centos:fence-agents-scsi, p-cpe:/a:redhat:enterprise_linux:fence-agents-ilo-mp, p-cpe:/a:centos:centos:fence-agents-intelmodular, p-cpe:/a:redhat:enterprise_linux:fence-virtd-libvirt, p-cpe:/a:centos:centos:fence-agents-apc, p-cpe:/a:redhat:enterprise_linux:fence-agents-nutanix-ahv, p-cpe:/a:redhat:enterprise_linux:fence-agents-apc-snmp, p-cpe:/a:centos:centos:fence-agents-gce, p-cpe:/a:centos:centos:fence-agents-redfish, p-cpe:/a:redhat:enterprise_linux:ha-cloud-support, p-cpe:/a:centos:centos:fence-agents-heuristics-ping, p-cpe:/a:centos:centos:fence-agents-ipmilan, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:centos:centos:fence-virt, p-cpe:/a:centos:centos:fence-agents-ilo-moonshot, p-cpe:/a:centos:centos:fence-agents-aws, p-cpe:/a:redhat:enterprise_linux:fence-agents-scsi, p-cpe:/a:centos:centos:fence-agents-azure-arm, p-cpe:/a:centos:centos:fence-agents-zvm, p-cpe:/a:centos:centos:fence-virtd-multicast, p-cpe:/a:centos:centos:fence-agents-amt-ws, p-cpe:/a:centos:centos:fence-agents-vmware-soap, p-cpe:/a:centos:centos:fence-virtd-serial, p-cpe:/a:centos:centos:fence-agents-kdump, p-cpe:/a:redhat:enterprise_linux:fence-agents-zvm, p-cpe:/a:centos:centos:fence-agents-ifmib, p-cpe:/a:centos:centos:fence-agents-eaton-snmp, p-cpe:/a:redhat:enterprise_linux:fence-agents-ilo-ssh, p-cpe:/a:redhat:enterprise_linux:fence-agents-mpath, p-cpe:/a:redhat:enterprise_linux:fence-agents-virsh, p-cpe:/a:centos:centos:fence-agents-apc-snmp, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:redhat:enterprise_linux:fence-agents-aliyun, p-cpe:/a:redhat:enterprise_linux:fence-agents-bladecenter, p-cpe:/a:redhat:enterprise_linux:fence-virtd-multicast, p-cpe:/a:centos:centos:fence-agents-common, p-cpe:/a:redhat:enterprise_linux:fence-agents-kdump, p-cpe:/a:centos:centos:fence-agents-hpblade, p-cpe:/a:centos:centos:fence-agents-all, p-cpe:/a:centos:centos:fence-agents-nutanix-ahv, p-cpe:/a:centos:centos:fence-agents, p-cpe:/a:redhat:enterprise_linux:fence-agents-ilo2, p-cpe:/a:centos:centos:fence-agents-compute, p-cpe:/a:centos:centos:fence-agents-aliyun, p-cpe:/a:centos:centos:ha-cloud-support, p-cpe:/a:centos:centos:fence-agents-mpath, p-cpe:/a:redhat:enterprise_linux:fence-agents-eaton-snmp, p-cpe:/a:centos:centos:fence-agents-ilo-mp, p-cpe:/a:redhat:enterprise_linux:fence-agents-openstack, p-cpe:/a:redhat:enterprise_linux:fence-agents-cisco-mds, p-cpe:/a:centos:centos:fence-agents-eps, p-cpe:/a:redhat:enterprise_linux:fence-agents-azure-arm, p-cpe:/a:redhat:enterprise_linux:fence-agents-drac5, p-cpe:/a:centos:centos:fence-agents-cisco-ucs, p-cpe:/a:redhat:enterprise_linux:fence-agents-ibm-powervs, p-cpe:/a:centos:centos:fence-agents-emerson, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:fence-agents-ibmblade, p-cpe:/a:redhat:enterprise_linux:fence-agents-intelmodular, p-cpe:/a:centos:centos:fence-agents-drac5, p-cpe:/a:centos:centos:fence-agents-sbd, p-cpe:/a:redhat:enterprise_linux:fence-agents-sbd, p-cpe:/a:centos:centos:fence-agents-ibmblade, p-cpe:/a:centos:centos:fence-agents-cisco-mds, p-cpe:/a:redhat:enterprise_linux:fence-agents-ibm-vpc, p-cpe:/a:centos:centos:fence-agents-virsh, p-cpe:/a:redhat:enterprise_linux:fence-virtd-serial, p-cpe:/a:redhat:enterprise_linux:fence-agents-rhevm, p-cpe:/a:redhat:enterprise_linux:fence-agents-brocade, p-cpe:/a:redhat:enterprise_linux:fence-agents-vmware-soap, p-cpe:/a:centos:centos:fence-agents-rsa, p-cpe:/a:redhat:enterprise_linux:fence-agents-eps, p-cpe:/a:centos:centos:fence-virtd, p-cpe:/a:redhat:enterprise_linux:fence-agents-cisco-ucs, p-cpe:/a:centos:centos:fence-virtd-libvirt, p-cpe:/a:redhat:enterprise_linux:fence-agents-ipmilan, p-cpe:/a:debian:debian_linux:python-cryptography, p-cpe:/a:redhat:enterprise_linux:fence-agents-ilo-moonshot, p-cpe:/a:centos:centos:fence-agents-rsb, p-cpe:/a:redhat:enterprise_linux:fence-agents-hpblade, p-cpe:/a:centos:centos:fence-agents-ibm-vpc, p-cpe:/a:centos:centos:fence-agents-ibm-powervs, p-cpe:/a:redhat:enterprise_linux:fence-agents-wti, p-cpe:/a:redhat:enterprise_linux:fence-agents-redfish, p-cpe:/a:redhat:enterprise_linux:fence-virtd-tcp, p-cpe:/a:centos:centos:fence-virtd-cpg, p-cpe:/a:redhat:enterprise_linux:fence-agents-all, p-cpe:/a:centos:centos:fence-agents-brocade, p-cpe:/a:redhat:enterprise_linux:fence-agents-ifmib, p-cpe:/a:redhat:enterprise_linux:fence-agents-rsa, p-cpe:/a:redhat:enterprise_linux:fence-agents-ipdu, p-cpe:/a:redhat:enterprise_linux:fence-virt, p-cpe:/a:centos:centos:fence-agents-ilo-ssh, p-cpe:/a:centos:centos:fence-agents-kubevirt, p-cpe:/a:redhat:enterprise_linux:fence-agents-heuristics-ping, p-cpe:/a:redhat:enterprise_linux:fence-agents-gce, p-cpe:/a:centos:centos:fence-agents-bladecenter, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:redhat:enterprise_linux:fence-agents-amt-ws, p-cpe:/a:redhat:enterprise_linux:fence-virtd

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: 3/26/2026

Reference Information

CVE: CVE-2026-34073