Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
AI Analysis
Technical Summary
This vulnerability concerns incorrect tag processing for empty messages when using AES-GCM-SIV and AES-SIV encryption modes. These modes are designed to provide authenticated encryption, and improper handling of tags for empty messages could undermine the integrity guarantees of the cryptographic process. The advisory from Microsoft Security Response Center does not provide further technical details, CVSS scoring, or patch information. The affected products mentioned include Microsoft Azure Linux 3.0 and cloud-hypervisor, but version specifics and exploitability details are not disclosed.
Potential Impact
The impact potentially involves weakening the authentication guarantees of AES-GCM-SIV and AES-SIV modes when processing empty messages, which could lead to integrity verification failures or cryptographic bypass scenarios. However, no known exploits have been reported, and the exact consequences remain unspecified due to lack of detailed information.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. No official fix or workaround information is provided at this time.
Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes
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 concerns incorrect tag processing for empty messages when using AES-GCM-SIV and AES-SIV encryption modes. These modes are designed to provide authenticated encryption, and improper handling of tags for empty messages could undermine the integrity guarantees of the cryptographic process. The advisory from Microsoft Security Response Center does not provide further technical details, CVSS scoring, or patch information. The affected products mentioned include Microsoft Azure Linux 3.0 and cloud-hypervisor, but version specifics and exploitability details are not disclosed.
Potential Impact
The impact potentially involves weakening the authentication guarantees of AES-GCM-SIV and AES-SIV modes when processing empty messages, which could lead to integrity verification failures or cryptographic bypass scenarios. However, no known exploits have been reported, and the exact consequences remain unspecified due to lack of detailed information.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. No official fix or workaround information is provided at this time.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-45446
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a2d2f8be617e2d834b6ea84
Added to database: 06/13/2026, 10:23:07 UTC
Last enriched: 06/20/2026, 20:53:46 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 100
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