Vulnerability-Lookup

OESA-2026-1913 (CVE-2026-4105)

Vulnerability from osv_openeuler – Published: 2026-04-17 11:10 – Updated: 2026-08-06 11:10 – Source website

Summary

systemd security update

Details

systemd is a system and service manager that runs as PID 1 and starts the rest of the system.

Security Fix(es):

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.(CVE-2026-4105)

Severity

6.7 (Medium)


                    
                      CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-4105	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "systemd-249-112.oe2203sp4.aarch64.rpm",
          "systemd-container-249-112.oe2203sp4.aarch64.rpm",
          "systemd-cryptsetup-249-112.oe2203sp4.aarch64.rpm",
          "systemd-debuginfo-249-112.oe2203sp4.aarch64.rpm",
          "systemd-debugsource-249-112.oe2203sp4.aarch64.rpm",
          "systemd-devel-249-112.oe2203sp4.aarch64.rpm",
          "systemd-libs-249-112.oe2203sp4.aarch64.rpm",
          "systemd-networkd-249-112.oe2203sp4.aarch64.rpm",
          "systemd-nspawn-249-112.oe2203sp4.aarch64.rpm",
          "systemd-pam-249-112.oe2203sp4.aarch64.rpm",
          "systemd-resolved-249-112.oe2203sp4.aarch64.rpm",
          "systemd-timesyncd-249-112.oe2203sp4.aarch64.rpm",
          "systemd-udev-249-112.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "systemd-help-249-112.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "systemd-249-112.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "systemd-249-112.oe2203sp4.x86_64.rpm",
          "systemd-container-249-112.oe2203sp4.x86_64.rpm",
          "systemd-cryptsetup-249-112.oe2203sp4.x86_64.rpm",
          "systemd-debuginfo-249-112.oe2203sp4.x86_64.rpm",
          "systemd-debugsource-249-112.oe2203sp4.x86_64.rpm",
          "systemd-devel-249-112.oe2203sp4.x86_64.rpm",
          "systemd-libs-249-112.oe2203sp4.x86_64.rpm",
          "systemd-networkd-249-112.oe2203sp4.x86_64.rpm",
          "systemd-nspawn-249-112.oe2203sp4.x86_64.rpm",
          "systemd-pam-249-112.oe2203sp4.x86_64.rpm",
          "systemd-resolved-249-112.oe2203sp4.x86_64.rpm",
          "systemd-timesyncd-249-112.oe2203sp4.x86_64.rpm",
          "systemd-udev-249-112.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "systemd",
        "purl": "pkg:rpm/openEuler/systemd\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "249-112.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "systemd is a system and service manager that runs as PID 1 and starts the rest of the system.\r\n\r\nSecurity Fix(es):\n\nA 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.(CVE-2026-4105)",
  "id": "OESA-2026-1913",
  "modified": "2026-08-06T11:10:55Z",
  "published": "2026-04-17T11:10:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1913"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4105"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "systemd security update",
  "upstream": [
    "CVE-2026-4105"
  ]
}

CVE-2026-4105 (GCVE-0-2026-4105)

Vulnerability from cvelistv5 – Published: 2026-03-13 08:52 – Updated: 2026-09-01 11:59

Title

Systemd: systemd: privilege escalation via improper access control in registermachine d-bus method

Summary

Severity

6.7 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-13 16:03 UTC

CWE

CWE-284 - Improper Access Control

Assigner

redhat redhat root Scorecard

References

4 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:7299	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-4105	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2447262	issue-trackingx_refsource_REDHAT
https://github.com/systemd/systemd/security/advis…

Impacted products

6 products

Vendor	Product	Version
Red Hat	Red Hat Hardened Images	Unaffected: 260.1-2.1.hum1 , < * (rpm) cpe:/a:redhat:hummingbird:1
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Date Public

2026-03-13 00:00

Credits

Red Hat would like to thank Asim Viladi Oglu Manizada for reporting this issue.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-4105",
                "options": [
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                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-13T16:03:09.227569Z",
                "version": "2.0.3"
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          "defaultStatus": "affected",
          "packageName": "systemd-main",
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          "vendor": "Red Hat",
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              "versionType": "rpm"
            }
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          "defaultStatus": "affected",
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          "product": "Red Hat Enterprise Linux 9",
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          "cpes": [
            "cpe:/a:redhat:openshift:4"
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          "packageName": "NetworkManager",
          "product": "Red Hat OpenShift Container Platform 4",
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "defaultStatus": "affected",
          "packageName": "openshift/ose-rhel-coreos-8",
          "product": "Red Hat OpenShift Container Platform 4",
          "vendor": "Red Hat"
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
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          "defaultStatus": "affected",
          "packageName": "openshift/ose-rhel-coreos-9",
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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OESA-2026-1913 (CVE-2026-4105)

CVE-2026-4105 (GCVE-0-2026-4105)

Tags

Sightings

Nomenclature

Related by attack behaviour