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Δ / VULNERABILITY RECORD

CVE-2026-27135.

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 Mar 26, 2026

Disclosure summary

nghttp2 Denial of service: Assertion failure due to the missing state validation

Source-reported weakness categories

CWE-617

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 Mar 26, 2026

nghttp2 Denial of service: Assertion failure due to the missing state validation

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 nghttp2 1.61.0-2 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guideazl3 cmake 3.30.3-12 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guideazl3 nodejs 20.14.0-13 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guidecbl2 cmake 3.21.4-21 on CBL Mariner 2.0 (MSRC status code 3)
Microsoft update guidecbl2 nghttp2 1.57.0-2 on CBL Mariner 2.0 (MSRC status code 3)
Microsoft update guidecbl2 nodejs18 18.20.3-11 on CBL Mariner 2.0 (MSRC status code 3)

Vendor remediation references

  • CBL-Mariner Releases · build 1.61.0-3 · product IDs 20318-17084
  • Vendor guidance · product IDs 20318-17084
  • CBL-Mariner Releases · build 3.30.3-13 · product IDs 20974-17084
  • Vendor guidance · product IDs 20974-17084
  • CBL-Mariner Releases · build 20.14.0-14 · product IDs 20866-17084
  • Vendor guidance · product IDs 20866-17084
  • CBL-Mariner Releases · build 3.21.4-23 · product IDs 20870-17086
  • Vendor guidance · product IDs 20870-17086
  • CBL-Mariner Releases · build 1.57.0-3 · product IDs 19774-17086
  • Vendor guidance · product IDs 19774-17086
  • CBL-Mariner Releases · build 18.20.3-12 · product IDs 20894-17086
  • Vendor guidance · product IDs 20894-17086

Original records & references

PUBLISHED 2026-03-19T21:02:06-04:00
MODIFIED 2026-03-26T21:41:20-04:00
INGESTED 2026-10-08T12:45:09-04:00