# CVE-2026-96987: Windows DNS out-of-bounds read information disclosure

Source: https://junglewise.ai/threats/cve-2026-96987-out-of-bounds-read-in-windows-dns-allows-an-authorized-attacker  
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-2026-96987 · Severity: medium · CVSS 4.9 · Published 2026-11-10

Windows DNS resolver contains an out-of-bounds read vulnerability that allows an authorized attacker on the network to read sensitive information from DNS server memory. This could expose cached DNS records, credentials, or other data the DNS service has access to, posing a data breach risk for organizations relying on DNS for internal services.

Technologies: [Microsoft Windows DNS](https://junglewise.ai/threats/technologies/windows-dns). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-96987 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-96987 being exploited in the wild.

**How severe is CVE-2026-96987?** Medium severity, with a CVSS score of 4.9, published 10 November 2026.

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

**Is there a fix for CVE-2026-96987?** 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-2026-96987 attacked?** It is attacked over the network, in an operating system.

**Am I affected by CVE-2026-96987?** Check whether you run Microsoft Windows DNS. 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

An out-of-bounds read in the Windows DNS service allows an authenticated network-based attacker to read memory beyond allocated buffers. The vulnerability requires the attacker to have network access and authentication credentials to exploit. Successful exploitation results in information disclosure from the DNS server process.

## Affected products

- Microsoft Windows DNS

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96987](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96987)

## Related threats

- [Microsoft Windows DNS out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-96988-out-of-bounds-read-in-windows-dns-allows-an-authorized-attacker)
- [Windows DNS out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-96986-out-of-bounds-read-in-windows-dns-allows-an-authorized-attacker)
- [Windows DNS out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-96985-out-of-bounds-read-in-windows-dns-allows-an-authorized-attacker)
- [Windows DNS out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-96980-out-of-bounds-read-in-windows-dns-allows-an-authorized-attacker)
- [Windows DNS out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-96976-out-of-bounds-read-in-windows-dns-allows-an-authorized-attacker)