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CVE-2026-110712— libsmb2 through 6.2 Heap Out-of-Bounds Read via smb2_decode_file_all_info

Quick assessment

Affected
sahlberg libsmb2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on uns

CVSS 6.5 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
sahlberg libsmb2 ≤ 6.2 affected
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I. Basic Information for CVE-2026-110712

Vulnerability Information

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Vulnerability Title
libsmb2 through 6.2 Heap Out-of-Bounds Read via smb2_decode_file_all_info
Source: CVE Program / CVE List V5
Vulnerability Description
libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can return crafted FileAllInformation replies to smb2_stat or smb2_fstat calls, crashing the client.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sahlberg libsmb2 0 ~ 6.2 -

II. Public POCs for CVE-2026-110712

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III. Intelligence Information for CVE-2026-110712

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Patches & Fixes for CVE-2026-110712 (1)

Other References for CVE-2026-110712 (3)

Same Patch Batch · sahlberg · 2026-10-14 · 3 CVEs total

CVE-2026-110714 6.5 MEDIUM libsmb2 through 6.2 Heap Out-of-Bounds Read via decode_acl Integer Underflow
CVE-2026-110713 6.5 MEDIUM libsmb2 through 6.2 Heap Out-of-Bounds Read via File System Info Decoders

IV. Related Vulnerabilities

Same product: libsmb2
Same vendor: sahlberg
Same weakness: CWE-125

V. Comments for CVE-2026-110712

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