CVE-2026-4105: Improper Access Control in Red Hat Red Hat Enterprise Linux 10
A flaw was found in systemd. The systemd-machined service contains an Improper Access Control vulnerability due to insufficient validation of the class parameter in the RegisterMachine D-Bus (Desktop Bus) method. A local unprivileged user can exploit this by attempting to register a machine with a specific class value, which may leave behind a usable, attacker-controlled machine object. This allows the attacker to invoke methods on the privileged object, leading to the execution of arbitrary commands with root privileges on the host system.
AI Analysis
Technical Summary
The vulnerability in systemd-machined involves improper access control due to inadequate validation of input parameters in the RegisterMachine D-Bus method. This allows a local unprivileged user to create a persistent machine object with attacker-controlled attributes. By leveraging this object, the attacker can invoke privileged methods leading to arbitrary command execution as root. The issue affects Red Hat Enterprise Linux 10 and has a medium severity rating with a CVSS 3.1 score of 6.7. The vendor advisory link is provided but does not explicitly state patch availability or mitigation steps in the supplied content.
Potential Impact
Successful exploitation allows a local unprivileged user to execute arbitrary commands with root privileges on the affected system. This compromises system confidentiality, integrity, and availability. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-4105 for current remediation guidance. Until an official fix is applied, restrict local user access where possible and monitor for unusual activity related to systemd-machined. Do not assume the vulnerability is mitigated without vendor confirmation.
CVE-2026-4105: Improper Access Control in Red Hat Red Hat Enterprise Linux 10
Description
A flaw was found in systemd. The systemd-machined service contains an Improper Access Control vulnerability due to insufficient validation of the class parameter in the RegisterMachine D-Bus (Desktop Bus) method. A local unprivileged user can exploit this by attempting to register a machine with a specific class value, which may leave behind a usable, attacker-controlled machine object. This allows the attacker to invoke methods on the privileged object, leading to the execution of arbitrary commands with root privileges on the host system.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in systemd-machined involves improper access control due to inadequate validation of input parameters in the RegisterMachine D-Bus method. This allows a local unprivileged user to create a persistent machine object with attacker-controlled attributes. By leveraging this object, the attacker can invoke privileged methods leading to arbitrary command execution as root. The issue affects Red Hat Enterprise Linux 10 and has a medium severity rating with a CVSS 3.1 score of 6.7. The vendor advisory link is provided but does not explicitly state patch availability or mitigation steps in the supplied content.
Potential Impact
Successful exploitation allows a local unprivileged user to execute arbitrary commands with root privileges on the affected system. This compromises system confidentiality, integrity, and availability. There are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-4105 for current remediation guidance. Until an official fix is applied, restrict local user access where possible and monitor for unusual activity related to systemd-machined. Do not assume the vulnerability is mitigated without vendor confirmation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-03-13T08:24:25.873Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b41bd82f860ef943e9123e
Added to database: 3/13/2026, 2:14:48 PM
Last enriched: 4/10/2026, 5:27:08 AM
Last updated: 4/27/2026, 9:06:49 PM
Views: 134
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