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CVE-2025-47981

Microsoft Windows 10 1507 buffer overflow

9.8 CRITICALPublic exploitEPSS 41.1%
  1. Published8 Jul 2025

Description

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

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Windows 10 1507< 10.0.10240.21073
Microsoft Windows 10 1607< 10.0.14393.8246
Microsoft Windows 10 1809< 10.0.17763.7558
Microsoft Windows 10 21h2< 10.0.19044.6093
Microsoft Windows 10 22h2< 10.0.19045.6093
Microsoft Windows 11 22h2< 10.0.22621.5624
Microsoft Windows 11 23h2< 10.0.22631.5624
Microsoft Windows 11 24h2< 10.0.26100.4652
Microsoft Windows Server 2008r2
Microsoft Windows Server 2012r2
Microsoft Windows Server 2016< 10.0.14393.8246
Microsoft Windows Server 2019< 10.0.17763.7558
Microsoft Windows Server 2022< 10.0.20348.3932
Microsoft Windows Server 2022 23h2< 10.0.25398.1732
Microsoft Windows Server 2025< 10.0.26100.4652

Remediation

Fixed in
Microsoft Windows 10 1507≥ 10.0.10240.21073
Microsoft Windows 10 1607≥ 10.0.14393.8246
Microsoft Windows 10 1809≥ 10.0.17763.7558
Microsoft Windows 10 21h2≥ 10.0.19044.6093
Microsoft Windows 10 22h2≥ 10.0.19045.6093
Microsoft Windows 11 22h2≥ 10.0.22621.5624
Microsoft Windows 11 23h2≥ 10.0.22631.5624
Microsoft Windows 11 24h2≥ 10.0.26100.4652
Microsoft Windows Server 2016≥ 10.0.14393.8246
Microsoft Windows Server 2019≥ 10.0.17763.7558

References

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Frequently asked

Is CVE-2025-47981 being actively exploited?

CVE-2025-47981 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 41.1%.

How severe is CVE-2025-47981?

CVE-2025-47981 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 41.1% probability of exploitation.

Which products are affected by CVE-2025-47981?

Affected products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, and 10 more.

How do I fix CVE-2025-47981?

Upgrade affected software to a fixed version, for example Microsoft Windows 10 1507 10.0.10240.21073, Microsoft Windows 10 1607 10.0.14393.8246, Microsoft Windows 10 1809 10.0.17763.7558 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-47981 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.