Disclosure summary
etcd: Nested etcd transactions bypass RBAC authorization checks
Source-reported weakness categories
CWE-863
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 31, 2026
etcd: Nested etcd transactions bypass RBAC authorization checks
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 5.4
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | cbl2 etcd 3.5.21-4 on CBL Mariner 2.0 | (MSRC status code 3) |
| Microsoft update guide | azl3 etcd 3.5.21-1 on Azure Linux 3.0 | (MSRC status code 3) |
Vendor remediation references
- CBL-Mariner Releases · build 3.5.28-1 · product IDs 20987-17086, 19431-17084
- Vendor guidance · product IDs 20987-17086, 19431-17084
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-03-27T21:01:22-04:00
MODIFIED 2026-03-31T10:56:33-04:00
INGESTED 2026-10-08T12:45:09-04:00