CVE-2025-47981

CRITICAL EPSS 97.3%
Published Jul 8, 202511mo ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Jul 8, 2025 11mo ago
Last Modified Jun 17, 2026 2w ago

Description

Heap-based buffer overflow in Windows SPNEGO Extended Negotiation allows an unauthorized attacker to execute code over a network.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
97.3% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-122

Affected Products 19

VendorProductVersionRange
microsoftwindows_10_1507* <10.0.10240.21073
microsoftwindows_10_1507* <10.0.10240.21073
microsoftwindows_10_1607* <10.0.14393.8246
microsoftwindows_10_1607* <10.0.14393.8246
microsoftwindows_10_1809* <10.0.17763.7558
microsoftwindows_10_1809* <10.0.17763.7558
microsoftwindows_10_21h2* <10.0.19044.6093
microsoftwindows_10_22h2* <10.0.19045.6093
microsoftwindows_11_22h2* <10.0.22621.5624
microsoftwindows_11_23h2* <10.0.22631.5624
microsoftwindows_11_24h2* <10.0.26100.4652
microsoftwindows_server_2008r2any
microsoftwindows_server_2012*any
microsoftwindows_server_2012r2any
microsoftwindows_server_2016* <10.0.14393.8246
microsoftwindows_server_2019* <10.0.17763.7558
microsoftwindows_server_2022* <10.0.20348.3932
microsoftwindows_server_2022_23h2* <10.0.25398.1732
microsoftwindows_server_2025* <10.0.26100.4652

References 3

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47981
    Vendor Advisory
  • vicarius.io https://www.vicarius.io/vsociety/posts/cve-2025-47981-detection-script-heap-based-buffer-overflow-in-windows-spnego-extended-negotiation
    ExploitThird Party Advisory
  • vicarius.io https://www.vicarius.io/vsociety/posts/cve-2025-47981-mitigation-script-heap-based-buffer-overflow-in-windows-spnego-extended-negotiation
    ExploitMitigationThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.