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CVE-2026-115505

7.6, high

Sahlberg libsmb2 Integer Overflow Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.6, high high CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
22 Oct 2026yesterday

Description

libsmb2 before 6.3 contains integer overflow vulnerabilities in the DCE/RPC NDR decoder in lib/dcerpc.c that allow heap out-of-bounds reads and writes. A malicious SMB server or machine-in-the-middle on unsigned connections can send crafted NetrShareEnum replies with wrapping actual_count or max_count values when clients call smb2_share_enum_async(), corrupting heap memory.

Details

Vendor
Sahlberg
Product
libsmb2
Weakness
CWE-190 (opens in a new tab)
Status
Received
Updated
22 Oct 2026
Assigner
disclosure@vulncheck.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

References 6

Patches and fixes 1

Other references 5

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Beyond this page

Is CVE-2026-115505 in your network?

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 23 Oct 2026, not the live upstream state.