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Δ / VULNERABILITY RECORD

CVE-2026-32241.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 7.5No 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

Flannel vulnerable to cross-node remote code execution via extension backend BackendData injection

Source-reported weakness categories

CWE-77

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-Mar

Open original source · Updated Sep 24, 2026

Flannel vulnerable to cross-node remote code execution via extension backend BackendData injection

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

Microsoft maximum product score: 7.5

VendorProduct / associationVersion / bounds
Microsoft update guideazl3 flannel 0.24.2-26 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guidecbl2 flannel 0.14.0-30 on CBL-Mariner 2.0 (MSRC status code 3)
Microsoft update guideazl3 flannel 0.24.2-24 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guidecbl2 flannel 0.14.0-30 on CBL Mariner 2.0 (MSRC status code 3)

Vendor remediation references

  • CBL-Mariner Releases · build 0.24.2-25 · product IDs 21132-17084
  • Vendor guidance · product IDs 21132-17084
  • Release Notes · build 0.14.0-31 · product IDs 21171-21692
  • Vendor guidance · product IDs 21171-21692
  • CBL-Mariner Releases · build 0.14.0-31 · product IDs 21171-17086
  • Vendor guidance · product IDs 21171-17086

Original records & references

PUBLISHED 2026-03-28T21:01:41-04:00
MODIFIED 2026-09-24T22:36:19-04:00
INGESTED 2026-10-08T12:45:09-04:00