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Δ / VULNERABILITY RECORD

CVE-2026-40225.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 6.4No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Sep 24, 2026

Disclosure summary

In udev in systemd before 260, local root execution can occur via malicious hardware devices and unsanitized kernel output.

Source-reported weakness categories

CWE-669

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Apr

Open original source · Updated Sep 24, 2026

In udev in systemd before 260, local root execution can occur via malicious hardware devices and unsanitized kernel output.

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 6.4

VendorProduct / associationVersion / bounds
Microsoft update guidecbl2 systemd 250.3-24 on CBL Mariner 2.0 (MSRC status code 3)
Microsoft update guideazl3 systemd 255-27 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guidecbl2 systemd 250.3-24 on CBL-Mariner 2.0 (MSRC status code 3)
Microsoft update guideazl3 systemd 255-26 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guideazl3 systemd 255-30 on Azure Linux 3.0 (MSRC status code 3)

Vendor remediation references

  • CBL-Mariner Releases · build 255-28 · product IDs 21282-17084
  • Vendor guidance · product IDs 21282-17084
  • Release Notes · product IDs 21125-21692
  • Vendor guidance · product IDs 21125-21692
  • CBL-Mariner Releases · build 255-30 · product IDs 21393-17084
  • Vendor guidance · product IDs 21393-17084

Original records & references

PUBLISHED 2026-04-28T21:06:51-04:00
MODIFIED 2026-09-24T22:44:42-04:00
INGESTED 2026-10-08T12:45:03-04:00