CVE-2026-110712
CVE-2026-110712
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/libsmb2-query-info-reply-oob-read (technical-description, exploit)
- github.com/sahlberg/libsmb2/blob/d67e213a5c4e7e4969fd81f0b95e4ca5831fbba1/lib/s… (technical-description)
- github.com/sahlberg/libsmb2/commit/57bee9fb941a39307145b82e4dd1718862f30a74 (patch)
- github.com/sahlberg/libsmb2 (product)
- www.vulncheck.com/advisories/libsmb2-through-6.2-heap-out-of-bounds-read-via-sm… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110712?
- CVE-2026-110712 is a medium-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-10-14.
- How severe is CVE-2026-110712?
- Medium severity. CVSS v3 base score is 6.5 out of 10.