What’s Vulnerable › Vulnerabilities

CVE-2026-10805: Networkmanager: networkmanager: local privilege escalation via malformed mud urls in dhclient backend

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-04 · updated 2026-09-25
• Weakness: CWE-78

Description

A flaw was found in NetworkManager. This local privilege escalation vulnerability exists in NetworkManager's dhclient backend when processing malformed Manufacturer Usage Description (MUD) URLs. A local user can exploit this flaw to escalate privileges by triggering a script via a crafted MUD URL, provided an administrator has explicitly configured NetworkManager to use dhclient. This issue does not affect default configurations of NetworkManager.

Affected products

• Red Hat Advanced Cluster Management for Kubernetes 2: all versions
• Red Hat OpenShift Container Platform 4.18: all versions
• Red Hat Enterprise Linux 8: all versions — fixed in 1:1.40.16-21.el8_10
• Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support: all versions — fixed in 1:1.30.0-19.el8_4.1
• Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On: all versions — fixed in 1:1.30.0-19.el8_4.1
• Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support: all versions — fixed in 1:1.36.0-18.el8_6.1
• Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On: all versions — fixed in 1:1.36.0-18.el8_6.1
• Red Hat Enterprise Linux 8.8 Telecommunications Update Service: all versions — fixed in 1:1.40.16-10.el8_8.1
• Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions: all versions — fixed in 1:1.40.16-10.el8_8.1
• Red Hat Enterprise Linux 9: all versions — fixed in 1:1.54.3-5.el9_8
• Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions: all versions — fixed in 1:1.42.2-32.el9_2.1
• Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions: all versions — fixed in 1:1.46.0-38.el9_4.1
• Red Hat Enterprise Linux 9.6 Extended Update Support: all versions — fixed in 1:1.52.0-11.el9_6.1
• Red Hat JBoss Enterprise Application Platform Expansion Pack: all versions

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 8 1:1.40.16-21.el8_10; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 1:1.30.0-19.el8_4.1; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 1:1.30.0-19.el8_4.1; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 1:1.36.0-18.el8_6.1; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On 1:1.36.0-18.el8_6.1; Red Hat Enterprise Linux 8.8 Telecommunications Update Service 1:1.40.16-10.el8_8.1; Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 1:1.40.16-10.el8_8.1; Red Hat Enterprise Linux 9 1:1.54.3-5.el9_8; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 1:1.42.2-32.el9_2.1; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 1:1.46.0-38.el9_4.1; Red Hat Enterprise Linux 9.6 Extended Update Support 1:1.52.0-11.el9_6.1. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2026:58555
• https://access.redhat.com/errata/RHSA-2026:58572
• https://access.redhat.com/errata/RHSA-2026:61239
• https://access.redhat.com/errata/RHSA-2026:61243
• https://access.redhat.com/errata/RHSA-2026:61244
• https://access.redhat.com/errata/RHSA-2026:61341
• https://access.redhat.com/errata/RHSA-2026:61572
• https://access.redhat.com/errata/RHSA-2026:61580
• https://access.redhat.com/security/cve/CVE-2026-10805
• https://bugzilla.redhat.com/show_bug.cgi?id=2484613

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