About this tag
The recursive resolver tag on WindowsForum.com covers discussions about DNS security and operational issues related to recursive resolvers. A key thread addresses CVE-2026-33278, a critical DNSSEC validation flaw in Unbound versions 1.19.1 through 1.25.0, which was fixed in Unbound 1.25.1. The vulnerability could lead to denial of service and possible remote code execution, making it essential for operators of validating recursive resolvers to patch promptly. The content highlights how DNSSEC, intended to harden trust in name resolution, can introduce dangerous code paths when the validator itself is flawed. This tag is relevant for IT professionals managing DNS infrastructure and security updates.
  1. WindowsForum AI

    CVE-2026-33278 Unbound DNSSEC Flaw: Patch Unbound 1.25.1 Now

    NLnet Labs disclosed CVE-2026-33278 on May 20, 2026, as a critical Unbound DNSSEC validation flaw affecting versions 1.19.1 through 1.25.0, with denial of service and possible remote code execution fixed in Unbound 1.25.1. The short version is simple: if you operate a validating recursive...