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CVE-2026-41096

Microsoft Windows 11 23h2 buffer overflow

9.8 CRITICALEPSS 0.97%
  1. Published12 May 2026

Description

Heap-based buffer overflow in Microsoft Windows DNS 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 11 23h2< 10.0.22631.7079
Microsoft Windows 11 24h2< 10.0.26100.8390
Microsoft Windows 11 25h2< 10.0.26200.8390
Microsoft Windows 11 26h1< 10.0.28000.2113
Microsoft Windows Server 2022 23h2< 10.0.25398.2330
Microsoft Windows Server 2025< 10.0.26100.32772

Remediation

Fixed in
Microsoft Windows 11 23h2≥ 10.0.22631.7079
Microsoft Windows 11 24h2≥ 10.0.26100.8390
Microsoft Windows 11 25h2≥ 10.0.26200.8390
Microsoft Windows 11 26h1≥ 10.0.28000.2113
Microsoft Windows Server 2022 23h2≥ 10.0.25398.2330
Microsoft Windows Server 2025≥ 10.0.26100.32772

References

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Frequently asked

Is CVE-2026-41096 being actively exploited?

CVE-2026-41096 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.97%.

How severe is CVE-2026-41096?

CVE-2026-41096 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.97% probability of exploitation.

Which products are affected by CVE-2026-41096?

Affected products include Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows Server 2022 23h2, and 1 more.

How do I fix CVE-2026-41096?

Upgrade affected software to a fixed version, for example Microsoft Windows 11 23h2 10.0.22631.7079, Microsoft Windows 11 24h2 10.0.26100.8390, Microsoft Windows 11 25h2 10.0.26200.8390 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-41096 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.