etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
AI Analysis
Technical Summary
This vulnerability involves a flaw in etcd's transaction handling where the PrevKv field can be used to read data without proper RBAC authorization enforcement. This bypass could lead to unauthorized read access to sensitive data stored in etcd. The issue is tracked as CVE-2026-44283 and is associated with Microsoft products including Azure Linux 3.0 and etcd. No CVSS score or patch information is provided, and no known exploits have been reported.
Potential Impact
The impact is unauthorized read access to data in etcd due to RBAC bypass. This could expose sensitive information to unauthorized users. There are no reports of active exploitation, and the extent of data exposure depends on the deployment and usage of etcd in affected environments.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is provided, organizations should monitor Microsoft Security Response Center advisories for updates. Until a patch is available, consider restricting access to etcd transactions and reviewing RBAC configurations to minimize exposure.
etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks
Description
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a flaw in etcd's transaction handling where the PrevKv field can be used to read data without proper RBAC authorization enforcement. This bypass could lead to unauthorized read access to sensitive data stored in etcd. The issue is tracked as CVE-2026-44283 and is associated with Microsoft products including Azure Linux 3.0 and etcd. No CVSS score or patch information is provided, and no known exploits have been reported.
Potential Impact
The impact is unauthorized read access to data in etcd due to RBAC bypass. This could expose sensitive information to unauthorized users. There are no reports of active exploitation, and the extent of data exposure depends on the deployment and usage of etcd in affected environments.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround is provided, organizations should monitor Microsoft Security Response Center advisories for updates. Until a patch is available, consider restricting access to etcd transactions and reviewing RBAC configurations to minimize exposure.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-44283
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a16098ae29bf47b50653f9f
Added to database: 05/26/2026, 20:58:50 UTC
Last enriched: 05/26/2026, 22:40:22 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 42
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