# CVE-2026-96002: DNS Server heap-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-96002-heap-based-buffer-overflow-in-dns-server-allows-an-authorized  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-96002 · Severity: high · CVSS 8.8 · Published 2026-11-10

A heap-based buffer overflow vulnerability exists in DNS Server that allows an authorized attacker to execute arbitrary code over the network. This could enable complete compromise of systems running the vulnerable DNS service, potentially allowing attackers to intercept or manipulate DNS traffic and maintain persistent access to affected networks.

Technologies: [DNS Server](https://junglewise.ai/threats/technologies/x-dns-server).

## Quick answers

**Is CVE-2026-96002 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-96002 being exploited in the wild.

**How severe is CVE-2026-96002?** High severity, with a CVSS score of 8.8, published 10 November 2026.

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

**Is there a fix for CVE-2026-96002?** 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-2026-96002 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-96002?** Check whether you run DNS Server. 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 heap-based buffer overflow in DNS Server allows an authorized attacker to execute code via network vectors. The vulnerability requires authentication to exploit and does not require user interaction. Successful exploitation grants remote code execution with the privileges of the DNS service.

## Affected products

- DNS Server

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96002](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96002)

## Related threats

- [DNS Server heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-96064-heap-based-buffer-overflow-in-dns-server-allows-an-authorized)
- [DNS Server out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-97833-out-of-bounds-read-in-dns-server-allows-an-authorized-attacker-to)
- [DNS Server buffer over-read information disclosure](https://junglewise.ai/threats/cve-2026-97828-buffer-over-read-in-dns-server-allows-an-authorized-attacker-to)
- [DNS Server out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-97826-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-2026-97823-out-of-bounds-read-in-dns-server-allows-an-authorized-attacker-to)