Skip to main content
VulnerabilityPublished Updated

CVE-2025-47981: Microsoft Windows 10 Version 1507 · Heap-based Buffer Overflow

Affects Microsoft Windows 10 Version 1507Source CVE Database V5

0

Not known to be exploited · 41% EPSS · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
41.1% chance of exploitation in 30 days – higher than 98% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Windows 10 Version 1507Affected
  • =10.0.10240.0
Fixed in–

AI-suggested

  1. Immediate upgrade or migration away from Windows 10 Version 1507 to a supported and patched Windows version is the most effective mitigation.
  2. If upgrading is not immediately feasible, implement network-level controls to restrict or block SPNEGO Extended Negotiation traffic, especially from untrusted networks or the internet.
  3. Employ intrusion detection and prevention systems (IDS/IPS) with signatures or heuristics targeting anomalous SPNEGO negotiation packets.
  4. Harden network perimeter defenses and segment critical systems to limit exposure to potentially vulnerable hosts.
  5. Monitor network traffic for unusual authentication negotiation attempts that could indicate exploitation attempts.
  6. Enforce strict access controls and network segmentation to reduce lateral movement if compromise occurs.
  7. Maintain up-to-date backups and incident response plans tailored to rapid containment of remote code execution incidents.
  8. Engage with Microsoft support channels for any forthcoming patches or workarounds and apply them promptly.
  9. Conduct vulnerability scanning and asset inventory to identify all systems running the affected Windows version.
  10. Educate IT staff on this vulnerability and ensure rapid patch management processes are in place.

Description

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

References

Community reviews

Loading reviews…