Is CVE-2026-96017 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-96017 being exploited in the wild.

How severe is CVE-2026-96017?

Medium severity, with a CVSS score of 4.9, published 10 November 2026.

Is there a fix for CVE-2026-96017?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-96017 attacked?

It is attacked over the network, in an operating system.

Am I affected by CVE-2026-96017?

Check whether you run Microsoft Windows DNS Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-96017: Microsoft Windows DNS Server use-after-free denial of service

CVE-2026-96017 · Severity: medium · CVSS 4.9 · Published 2026-11-10

A use-after-free vulnerability in Windows DNS Server allows an authenticated attacker to crash the DNS service, disrupting name resolution for corporate networks and user devices. The attacker must already have network access and proper credentials to trigger the flaw, limiting the threat to authorized users or compromised accounts.

Technologies: Microsoft Windows DNS Server. Vendors: Microsoft.

Quick answers

Is CVE-2026-96017 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-96017 being exploited in the wild.
How severe is CVE-2026-96017?: Medium severity, with a CVSS score of 4.9, published 10 November 2026.
Which products and versions are affected?: Microsoft Windows DNS Server <UNKNOWN>.
Is there a fix for CVE-2026-96017?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-96017 attacked?: It is attacked over the network, in an operating system.
Am I affected by CVE-2026-96017?: Check whether you run Microsoft Windows DNS Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A use-after-free condition in the DNS Server component allows an authorized attacker with network access to trigger a denial of service by sending a specially crafted network request. The vulnerability results in a crash of the DNS service. A fix is available from Microsoft.

Affected products

Microsoft Windows DNS Server <UNKNOWN>

Timeline

2026-11-10: disclosed
2026-11-10: advisory

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96017

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