CVE-2025-47981

critical

Description

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

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47981

https://www.helpnetsecurity.com/2025/07/10/ruckus-network-management-solutions-riddled-with-unpatched-vulnerabilities/

https://www.infosecurity-magazine.com/news/microsoft-patch-tuesday-july-2025/

https://www.helpnetsecurity.com/2025/07/09/microsoft-fixes-critical-wormable-windows-flaw-cve-2025-47981/

https://thehackernews.com/2025/07/microsoft-patches-130-vulnerabilities.html

https://securityaffairs.com/179738/security/microsoft-patch-tuesday-security-updates-for-july-2025-fixed-a-zero-day.html

https://cyberscoop.com/microsoft-patch-tuesday-july-2025/

https://www.tenable.com/blog/microsofts-july-2025-patch-tuesday-addresses-128-cves-cve-2025-49719

https://www.vicarius.io/vsociety/posts/cve-2025-47981-mitigation-script-heap-based-buffer-overflow-in-windows-spnego-extended-negotiation

https://www.vicarius.io/vsociety/posts/cve-2025-47981-detection-script-heap-based-buffer-overflow-in-windows-spnego-extended-negotiation

Details

Source: Mitre, NVD

Published: 2025-07-08

Updated: 2025-09-15

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.00167