# CVE-2026-96926: Microsoft DNS Server missing authorization vulnerability

Source: https://junglewise.ai/threats/cve-2026-96926-missing-authorization-in-dns-server-allows-an-authorized-attacker  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-96926 · Severity: medium · CVSS 5.5 · Published 2026-10-13

Microsoft DNS Server contains a missing authorization flaw that allows an authenticated attacker with local access to tamper with DNS records or settings. This could enable an attacker to redirect traffic, poison DNS caches, or disrupt network services for systems relying on the affected DNS server.

Technologies: [Microsoft DNS Server](https://junglewise.ai/threats/technologies/microsoft-dns-server), [Microsoft Windows 10 1607](https://junglewise.ai/threats/technologies/windows-10-1607), [Microsoft Windows 10 1809](https://junglewise.ai/threats/technologies/windows-10-1809), [Microsoft Windows Server 2012](https://junglewise.ai/threats/technologies/windows-server-2012), [Microsoft Windows Server 2016](https://junglewise.ai/threats/technologies/windows-server-2016), [Microsoft Windows Server 2019](https://junglewise.ai/threats/technologies/windows-server-2019), [Microsoft Windows Server 2022](https://junglewise.ai/threats/technologies/windows-server-2022), [Microsoft Windows Server 2025](https://junglewise.ai/threats/technologies/windows-server-2025). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-96926 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-96926 being exploited in the wild.

**How severe is CVE-2026-96926?** Medium severity, with a CVSS score of 5.5, published 13 October 2026.

**Which products and versions are affected?** Microsoft DNS Server.

**Is there a fix for CVE-2026-96926?** 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-2026-96926 attacked?** It is attacked with local access, in a hosted service.

**Am I affected by CVE-2026-96926?** Check whether you run Microsoft DNS Server, Microsoft Windows 10 1607, Microsoft Windows 10 1809 or one of the others listed. 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

The vulnerability is a missing authorization check in the DNS Server component, allowing an authenticated attacker with local access to perform unauthorized DNS record modifications or configuration tampering. The flaw requires local access and an existing authenticated account, limiting exposure but allowing privilege escalation or lateral movement scenarios. No information about available patches is provided in the advisory.

## Affected products

- Microsoft DNS Server

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96926](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96926)

## Related threats

- [Windows DNS Server out-of-bounds read](https://junglewise.ai/threats/cve-2026-97844-out-of-bounds-read-in-dns-server-allows-an-authorized-attacker-to)
- [Windows DNS Server out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-97843-out-of-bounds-read-in-dns-server-allows-an-authorized-attacker-to)
- [Windows DNS Server out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-97842-out-of-bounds-read-in-dns-server-allows-an-authorized-attacker-to)
- [Windows DNS Server out-of-bounds read](https://junglewise.ai/threats/cve-2026-97841-out-of-bounds-read-in-dns-server-allows-an-authorized-attacker-to)
- [DNS Server out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-97840-out-of-bounds-read-in-dns-server-allows-an-authorized-attacker-to)