Vulnerability DatabaseCVE-2026-110712
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CVE-2026-110712
Published:October 14, 2026
Updated:October 15, 2026
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.
Related Resources (7)
https://github.com/sahlberg/libsmb2
https://github.com/sahlberg/libsmb2/blob/d67e213a5c4e7e4969fd81f0b95e4ca5831fbba1/lib/smb2-data-file-info.c#L202
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110712.json
https://github.com/sahlberg/libsmb2/commit/57bee9fb941a39307145b82e4dd1718862f30a74
https://nvd.nist.gov/vuln/detail/CVE-2026-110712
https://hackmd.io/@haind-pwn/libsmb2-query-info-reply-oob-read
https://www.vulncheck.com/advisories/libsmb2-through-6.2-heap-out-of-bounds-read-via-smb2-decode-file-all-info
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CVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Out-of-bounds Read
CWE-125
EPSS
Base Score:
0.45