CVE-2026-42904

CRITICAL EPSS 35.1%
Published Jun 9, 20262w ago · Modified Jun 17, 20261w ago
9.6 CVSS 3.1
Critical
Find Similar
Published Jun 9, 2026 2w ago
Last Modified Jun 17, 2026 1w ago

Description

Heap-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to elevate privileges over an adjacent network.

CVSS Details

Base Score
9.6
Exploitability
2.8
Impact
6.0
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
35.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-122

Affected Products 16

VendorProductVersionRange
microsoftwindows_10_21h2* <10.0.19044.7417
microsoftwindows_10_21h2* <10.0.19044.7417
microsoftwindows_10_21h2* <10.0.19044.7417
microsoftwindows_10_22h2* <10.0.19045.7417
microsoftwindows_10_22h2* <10.0.19045.7417
microsoftwindows_10_22h2* <10.0.19045.7417
microsoftwindows_11_23h2* <10.0.22631.7219
microsoftwindows_11_23h2* <10.0.22631.7219
microsoftwindows_11_24h2* <10.0.26100.8655
microsoftwindows_11_24h2* <10.0.26100.8655
microsoftwindows_11_25h2* <10.0.26200.8655
microsoftwindows_11_25h2* <10.0.26200.8655
microsoftwindows_11_26h1* <10.0.28000.2269
microsoftwindows_11_26h1* <10.0.28000.2269
microsoftwindows_server_2022* <10.0.20348.5256
microsoftwindows_server_2025* <10.0.26100.32995

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42904
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.