smb: client: validate the whole DACL before rewriting it in cifsacl
CVE-2026-31709 is a vulnerability in Microsoft software related to the SMB client component, specifically involving validation of the Discretionary Access Control List (DACL) before rewriting it in the cifsacl module. The provided information is limited and does not include technical details about exploitation or impact. Only version 3.0 of the affected product is explicitly identified. No patch or remediation details are provided, and there is no evidence of known exploits in the wild.
AI Analysis
Technical Summary
This vulnerability concerns the SMB client in Microsoft software where the entire DACL is not properly validated before being rewritten in the cifsacl component. Improper validation of access control lists can potentially lead to incorrect permissions being applied, but the exact impact and exploitation methods are not detailed in the available data. The affected version is specifically identified as 3.0. No CVSS score or detailed vendor advisory information is available to clarify severity or remediation status.
Potential Impact
The impact is unclear due to lack of detailed information. Improper validation of DACLs could theoretically lead to unauthorized access or privilege escalation if exploited, but no confirmed exploit or detailed impact analysis is provided. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.
smb: client: validate the whole DACL before rewriting it in cifsacl
Description
CVE-2026-31709 is a vulnerability in Microsoft software related to the SMB client component, specifically involving validation of the Discretionary Access Control List (DACL) before rewriting it in the cifsacl module. The provided information is limited and does not include technical details about exploitation or impact. Only version 3.0 of the affected product is explicitly identified. No patch or remediation details are provided, and there is no evidence of known exploits in the wild.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability concerns the SMB client in Microsoft software where the entire DACL is not properly validated before being rewritten in the cifsacl component. Improper validation of access control lists can potentially lead to incorrect permissions being applied, but the exact impact and exploitation methods are not detailed in the available data. The affected version is specifically identified as 3.0. No CVSS score or detailed vendor advisory information is available to clarify severity or remediation status.
Potential Impact
The impact is unclear due to lack of detailed information. Improper validation of DACLs could theoretically lead to unauthorized access or privilege escalation if exploited, but no confirmed exploit or detailed impact analysis is provided. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-31709
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a3c0d25eed863c81e23ee4c
Added to database: 06/24/2026, 17:00:21 UTC
Last enriched: 06/24/2026, 17:19:50 UTC
Last updated: 07/31/2026, 19:24:49 UTC
Views: 20
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