CVE-2026-110714
libsmb2 through 6.2 contains an integer underflow vulnerability in decode_acl that allows malicious SMB servers to trigger heap out-of-bounds reads via crafted securit…
Published Oct 14, 2026 · updated Oct 14, 2026
libsmb2 through 6.2 contains an integer underflow vulnerability in decode_acl that allows malicious SMB servers to trigger heap out-of-bounds reads via crafted security descriptors. Attackers controlling a server or intercepting unsigned sessions can send an AclSize below 8 in a QUERY_INFO reply, bypassing ACE bounds checks and crashing the client.
Code
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Timeline
Detection, updates, and resolution for this record.
Oct 14, 2026 · NIST NVD
Detected
libsmb2 through 6.2 contains an integer underflow vulnerability in decode_acl that allows malicious SMB servers to trigger heap out-of-bounds reads via crafted security descriptors. Attackers controlling a server or intercepting unsigned sessions can send an AclSize below 8 in a QUERY_INFO reply, bypassing ACE bounds checks and crashing the client.
Sources
- CVE.orgVulnerability recordCVE-2026-110714
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-110714
30-day exploitation probability 0.5%
first.org - NIST NVDVulnerability recordCVE-2026-110714
libsmb2 through 6.2 contains an integer underflow vulnerability in decode_acl that allows malicious SMB servers to trigger heap out-of-bounds reads via crafted security descriptors. Attackers controlling a server or intercepting unsigned sessions can send an AclSize below 8 in a
nvd.nist.gov