Vulnerability-Lookup

OESA-2026-2277 (CVE-2026-40226)

Vulnerability from osv_openeuler – Published: 2026-05-09 11:11 – Updated: 2026-08-06 11:11 – 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):

In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.(CVE-2026-40226)

Severity

6.4 (Medium)


                    
                      CVSS:3.1/AV:L/AC:H/PR:H/UI:N/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-2026-40226	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "systemd-255-58.oe2403sp1.aarch64.rpm",
          "systemd-container-255-58.oe2403sp1.aarch64.rpm",
          "systemd-cryptsetup-255-58.oe2403sp1.aarch64.rpm",
          "systemd-debuginfo-255-58.oe2403sp1.aarch64.rpm",
          "systemd-debugsource-255-58.oe2403sp1.aarch64.rpm",
          "systemd-devel-255-58.oe2403sp1.aarch64.rpm",
          "systemd-libs-255-58.oe2403sp1.aarch64.rpm",
          "systemd-networkd-255-58.oe2403sp1.aarch64.rpm",
          "systemd-nspawn-255-58.oe2403sp1.aarch64.rpm",
          "systemd-pam-255-58.oe2403sp1.aarch64.rpm",
          "systemd-resolved-255-58.oe2403sp1.aarch64.rpm",
          "systemd-timesyncd-255-58.oe2403sp1.aarch64.rpm",
          "systemd-udev-255-58.oe2403sp1.aarch64.rpm"
        ],
        "noarch": [
          "systemd-help-255-58.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "systemd-255-58.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "systemd-255-58.oe2403sp1.x86_64.rpm",
          "systemd-container-255-58.oe2403sp1.x86_64.rpm",
          "systemd-cryptsetup-255-58.oe2403sp1.x86_64.rpm",
          "systemd-debuginfo-255-58.oe2403sp1.x86_64.rpm",
          "systemd-debugsource-255-58.oe2403sp1.x86_64.rpm",
          "systemd-devel-255-58.oe2403sp1.x86_64.rpm",
          "systemd-libs-255-58.oe2403sp1.x86_64.rpm",
          "systemd-networkd-255-58.oe2403sp1.x86_64.rpm",
          "systemd-nspawn-255-58.oe2403sp1.x86_64.rpm",
          "systemd-pam-255-58.oe2403sp1.x86_64.rpm",
          "systemd-resolved-255-58.oe2403sp1.x86_64.rpm",
          "systemd-timesyncd-255-58.oe2403sp1.x86_64.rpm",
          "systemd-udev-255-58.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "systemd",
        "purl": "pkg:rpm/openEuler/systemd\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "255-58.oe2403sp1"
            }
          ],
          "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\nIn nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.(CVE-2026-40226)",
  "id": "OESA-2026-2277",
  "modified": "2026-08-06T11:11:15Z",
  "published": "2026-05-09T11:11:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2277"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40226"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "systemd security update",
  "upstream": [
    "CVE-2026-40226"
  ]
}

CVE-2026-40226 (GCVE-0-2026-40226)

Vulnerability from cvelistv5 – Published: 2026-04-10 15:18 – Updated: 2026-04-14 14:48

Summary

In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

Severity

6.4 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-14 14:47 UTC

CWE

CWE-348 - Use of Less Trusted Source

Assigner

mitre mitre root Scorecard

References

1 reference

URL	Tags
https://github.com/systemd/systemd/security/advis…

Impacted products

1 product

Vendor	Product	Version
systemd	systemd	Affected: 233 , < 260 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-40226",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-14T14:47:51.552925Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-14T14:48:20.451Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "systemd",
          "vendor": "systemd",
          "versions": [
            {
              "lessThan": "260",
              "status": "affected",
              "version": "233",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-348",
              "description": "CWE-348 Use of Less Trusted Source",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-10T15:34:22.039Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx"
        }
      ],
      "x_generator": {
        "engine": "CVE-Request-form 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-40226",
    "datePublished": "2026-04-10T15:18:10.447Z",
    "dateReserved": "2026-04-10T15:18:10.040Z",
    "dateUpdated": "2026-04-14T14:48:20.451Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.
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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.
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OESA-2026-2277 (CVE-2026-40226)

CVE-2026-40226 (GCVE-0-2026-40226)

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Sightings

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