PT-2025-28516 · Microsoft · Windows

Guhe120 + 1 · Published 2025-07-08 · Updated 2026-02-15 · CVE-2025-47981

Positive Technologies · (AI Summary)

CVSS v3.1

10

Critical

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

Name of the Vulnerable Software and Affected Versions Windows versions (affected versions not specified)

Description A critical vulnerability exists in the Windows SPNEGO Extended Negotiation (NEGOEX) security mechanism. This flaw is a heap-based buffer overflow that allows an unauthorized attacker to execute code remotely over a network. The vulnerability is considered 'wormable', meaning it has the potential to spread automatically across networks, similar to WannaCry and NotPetya. Successful exploitation grants attackers complete system control with SYSTEM privileges.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

BDU:2025-08224

CVE-2025-47981

Affected Products

Windows

References · 49

• 🔥 https://vicarius.io/vsociety/posts/cve-2025-47981-detection-script-heap-based-buffer-overflow-in-windows-spnego-extended-negotiation · Exploit
• 🔥 https://vicarius.io/vsociety/posts/cve-2025-47981-mitigation-script-heap-based-buffer-overflow-in-windows-spnego-extended-negotiation · Exploit
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-47981 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-47981 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47981 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-47981 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-47981 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/722735 · Security Note
• https://bdu.fstec.ru/vul/2025-08224 · Security Note
• https://twitter.com/windowsforum/status/1942917703670366574 · Twitter Post
• https://twitter.com/Prevent_Cyber/status/1942820850039918614 · Twitter Post
• https://twitter.com/PoseidonTPA/status/1942916703572357441 · Twitter Post
• https://twitter.com/CVEnew/status/1942958444329173383 · Twitter Post
• https://twitter.com/RedTeamTimes/status/1944340866232877074 · Twitter Post
• https://twitter.com/windowsforum/status/1943026879868404083 · Twitter Post