Quick answers
- Is CVE-2026-88130 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-88130 being exploited in the wild.
- How severe is CVE-2026-88130?
- Medium severity, with a CVSS score of 6.5, published 13 October 2026.
- Which products and versions are affected?
- Microsoft DNS Server.
- Is there a fix for CVE-2026-88130?
- 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-2026-88130 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-88130?
- Check whether you run Microsoft DNS Server, Microsoft Windows Server 2012, Microsoft Windows Server 2016 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
An out-of-bounds read vulnerability in Microsoft DNS Server allows an authorized attacker to craft a malicious DNS query that reads memory beyond allocated buffer boundaries, causing the DNS service to crash. This requires network access and valid authentication credentials. The resulting denial of service prevents DNS resolution until the service is restarted.
Affected products
- Microsoft DNS Server
Timeline
- 2026-10-13: disclosed