# CVE-2026-97828: DNS Server buffer over-read information disclosure

Source: https://junglewise.ai/threats/cve-2026-97828-buffer-over-read-in-dns-server-allows-an-authorized-attacker-to  
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-2026-97828 · Severity: medium · CVSS 6.5 · Published 2026-10-13

A DNS Server component contains a buffer over-read vulnerability that allows an authorized attacker to read sensitive data from server memory over the network. An attacker with valid credentials could extract configuration information or other confidential data without modifying systems, leading to information leakage that may assist in further attacks.

Technologies: [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 10 21h2](https://junglewise.ai/threats/technologies/windows-10-21h2), [Microsoft Windows 10 22h2](https://junglewise.ai/threats/technologies/windows-10-22h2), [Microsoft Windows 11 23h2](https://junglewise.ai/threats/technologies/windows-11-23h2), [Microsoft Windows 11 24h2](https://junglewise.ai/threats/technologies/windows-11-24h2), [Microsoft Windows 11 25h2](https://junglewise.ai/threats/technologies/windows-11-25h2), [Microsoft Windows 11 26h1](https://junglewise.ai/threats/technologies/windows-11-26h1), [Microsoft Windows 11 26h2](https://junglewise.ai/threats/technologies/windows-11-26h2), [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), [DNS Server](https://junglewise.ai/threats/technologies/x-dns-server). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-97828 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-97828 being exploited in the wild.

**How severe is CVE-2026-97828?** Medium severity, with a CVSS score of 6.5, published 13 October 2026.

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

**Is there a fix for CVE-2026-97828?** 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-2026-97828 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-97828?** Check whether you run Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2 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 buffer over-read flaw in a DNS Server component that permits an authenticated attacker to disclose memory contents via network access. The attack requires prior authentication, limiting exposure but still enabling credential holders to retrieve sensitive information. A fix is available from the vendor.

## Affected products

- DNS Server

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97828](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97828)

## 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)