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.
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References
History
Wed, 14 Oct 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | libsmb2 through 6.2 Heap Out-of-Bounds Read via decode_acl Integer Underflow | |
| Weaknesses | CWE-191 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-14T15:01:29.077Z
Reserved: 2026-10-14T14:39:52.603Z
Link: CVE-2026-110714
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Status : Received
Published: 2026-10-14T16:17:43.473
Modified: 2026-10-14T16:17:43.473
Link: CVE-2026-110714
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Weaknesses