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EPSS 0.0%top 85%

smb/client: fix out-of-bounds read in smb2_compound_op()

0
Medium
Published: Sat May 02 2026 (05/02/2026, 00:00:00 UTC)
Source: GCVE Database
Vendor/Project: Microsoft Security Response Center
Product: Microsoft

Description

CVE-2026-46155 is a vulnerability in Microsoft products involving an out-of-bounds read in the smb2_compound_op() function. The vulnerability affects Microsoft and Azure Linux versions 3. 0. No CVSS score or detailed impact information is provided. There are no known exploits in the wild, and no patch or remediation details are currently available. The vendor advisory does not specify a fix or mitigation. The vulnerability relates to SMB client functionality and could potentially lead to memory safety issues.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 05/29/2026, 21:13:43 UTC

Technical Analysis

This vulnerability involves an out-of-bounds read in the smb2_compound_op() function within Microsoft and Azure Linux 3.0 SMB client implementations. The out-of-bounds read could cause improper memory access, potentially leading to application crashes or information disclosure. No further technical details, CVSS score, or exploit information is provided in the available data. The vendor advisory from Microsoft Security Response Center does not include patch or mitigation information at this time.

Potential Impact

The impact is currently unclear due to lack of detailed information and absence of a CVSS score. Out-of-bounds reads can lead to application instability or information disclosure, but no known exploits or confirmed impact scenarios are reported. Without vendor guidance, the exact risk level remains uncertain.

Mitigation Recommendations

Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. No official fix or mitigation instructions are provided in the available data. Users should monitor vendor communications for updates.

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Technical Details

Gcve Source
db.gcve.eu
Csaf Category
csaf_vex
Csaf Version
2.0
Publisher
Microsoft Security Response Center
Advisory Id
msrc_CVE-2026-46155
Cve Count
1
Additional Cves
[]
Cvss Version
null

Threat ID: 6a19fed0e29bf47b500fe3bb

Added to database: 5/29/2026, 9:02:08 PM

Last enriched: 5/29/2026, 9:13:43 PM

Last updated: 5/31/2026, 4:43:23 AM

Views: 3

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