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Vulnerability record · CVE-2025-47981 · published 8 July 2025

CVE-2025-47981: Microsoft windows 10 1507 heap-based buffer overflow vulnerability

Microsoft · Windows 10 1507

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

9.8 CVSS 3.1 Critical EPSS 33% · top 1.7% CWE-122 · Heap-based buffer overflow
9.8CVSS 3.1 base score
33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
15Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

15 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-47981), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.