Quick answers
- Is CVE-2026-105579 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-105579 being exploited in the wild.
- How severe is CVE-2026-105579?
- High severity, with a CVSS score of 7.5, published 10 November 2026.
- Which products and versions are affected?
- Microsoft Windows DNS Server.
- Is there a fix for CVE-2026-105579?
- 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-2026-105579 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-105579?
- Check whether you run Microsoft Windows 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
An integer overflow or wraparound flaw exists in Windows DNS's message parsing logic, allowing an unauthenticated attacker to trigger a memory read operation via a specially crafted network packet. The vulnerability requires network access to the DNS service but no prior authentication. Successful exploitation discloses information from server memory.
Affected products
- Microsoft Windows DNS Server
Timeline
- 2026-11-10: disclosed