CVE-2026-40410

HIGH EPSS 15.3%
Published May 12, 20261mo ago · Modified Jun 17, 20261w ago
7.0 CVSS 3.1
High
Find Similar
Published May 12, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

Use after free in Windows SMB Client allows an authorized attacker to elevate privileges locally.

CVSS Details

Base Score
7.0
Exploitability
1.0
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
15.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 24

VendorProductVersionRange
microsoftwindows_10_1607* <10.0.14393.9140
microsoftwindows_10_1607* <10.0.14393.9140
microsoftwindows_10_1809* <10.0.17763.8755
microsoftwindows_10_1809* <10.0.17763.8755
microsoftwindows_10_21h2* <10.0.19044.7291
microsoftwindows_10_21h2* <10.0.19044.7291
microsoftwindows_10_21h2* <10.0.19044.7291
microsoftwindows_10_22h2* <10.0.19045.7291
microsoftwindows_10_22h2* <10.0.19045.7291
microsoftwindows_10_22h2* <10.0.19045.7291
microsoftwindows_11_23h2* <10.0.22631.7079
microsoftwindows_11_23h2* <10.0.22631.7079
microsoftwindows_11_24h2* <10.0.26100.8390
microsoftwindows_11_24h2* <10.0.26100.8390
microsoftwindows_11_25h2* <10.0.26200.8390
microsoftwindows_11_25h2* <10.0.26200.8390
microsoftwindows_11_26h1* <10.0.28000.2113
microsoftwindows_11_26h1* <10.0.28000.2113
microsoftwindows_server_2012r2any
microsoftwindows_server_2016* <10.0.14393.9140
microsoftwindows_server_2019* <10.0.17763.8755
microsoftwindows_server_2022* <10.0.20348.5074
microsoftwindows_server_2022_23h2* <10.0.25398.2330
microsoftwindows_server_2025* <10.0.26100.32772

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40410
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.