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.
History

Tue, 10 Nov 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Sahlberg
Sahlberg libsmb2
Vendors & Products Sahlberg
Sahlberg libsmb2

Thu, 15 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 14 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
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.
Title libsmb2 through 6.2 Heap Out-of-Bounds Read via smb2_decode_file_all_info
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-14T15:01:27.547Z

Updated: 2026-10-14T17:40:05.910Z

Reserved: 2026-10-14T14:39:51.944Z

Link: CVE-2026-110712

cve-icon Vulnrichment

Updated: 2026-10-14T17:39:57.242Z

cve-icon NVD

Status : Deferred

Published: 2026-10-14T16:17:43.193

Modified: 2026-10-16T19:18:44.867

Link: CVE-2026-110712

cve-icon Redhat

No data.