Security readout for executives and security teams
Plain-English summary
A logged-in, low-privilege user may be able to turn a flawed systemd machine-registration process into full root control. The issue is local rather than remotely reachable, but successful exploitation could expose or alter all host data and disrupt services.
Executive priority
Prioritize affected multi-user, administrative, development, and container-hosting systems where untrusted users may gain local access. Treat remediation as important privilege-escalation hardening, but below unauthenticated remote-code-execution emergencies unless local compromise indicators or especially sensitive workloads increase urgency.
Technical view
systemd-machined insufficiently validates the class parameter supplied to the RegisterMachine D-Bus method. A failed or improper registration may leave an attacker-controlled machine object usable through privileged methods, potentially enabling arbitrary command execution as root. The issue is classified as CWE-284 with CVSS 3.1 score 6.7.
Likely exposure
Potential exposure includes listed Red Hat Hardened Images, RHEL 7 through 10, and OpenShift Container Platform 4 deployments. Practical exposure depends on affected package versions, systemd-machined availability, and an attacker already having local unprivileged access. The bundle does not provide complete fixed-version boundaries.
Exploitation context
Exploitation requires local low-privilege access and is rated high complexity with user interaction in the supplied CVSS vector. Successful exploitation can compromise confidentiality, integrity, and availability as root. The CVE is not listed in KEV, and the supplied sources do not establish active exploitation.
Researcher notes
The affected-product list includes NetworkManager, rpm-ostree, and OpenShift component entries, but the described root cause is in systemd-machined. Do not assume every listed package independently contains the flaw. Exact vulnerable and fixed versions, persistence behavior, and observed exploitation are not fully established by the supplied bundle.
Mitigation direction
- Review RHSA-2026:7299 and the systemd advisory for applicable fixed packages.
- Apply vendor-provided security updates to affected Red Hat and systemd deployments.
- Restrict unnecessary local accounts and interactive access until updates are applied.
- Follow vendor guidance if affected systems cannot be updated promptly.
Validation and detection
- Inventory RHEL, OpenShift, Hardened Images, and installed systemd package versions.
- Compare installed versions and product status with current Red Hat advisories.
- Determine whether systemd-machined is present and operational on exposed hosts.
- Confirm security updates installed successfully and hosts run the updated packages.
- Review privileged process and machine-object activity for unexpected behavior.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-4105 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H0.85.9redhatVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineredhat
Made public.
- Source timelineredhat
Reported to Red Hat.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2026:7299CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-4105CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHBZ#2447262CVE reference, redhat · issue-tracking, x_refsource_REDHAT
- https://github.com/systemd/systemd/security/advisories/GHSA-4h6x-r8vx-3862CVE reference, redhat
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.