dns reverse lookup

On May 20, 2026, CVE-2026-43617 was published for rsync 3.4.2 and earlier, describing a medium-severity authorization bypass in rsync daemon hostname-based access controls when the service is configured with chroot. The bug is not the kind of remote-code-execution siren that sends every SOC...

Microsoft’s March 2026 security guidance includes CVE-2026-4437, a flaw described as a case where gethostbyaddr and gethostbyaddr_r may incorrectly handle a DNS response. The wording is brief, but it signals a bug in a long-standing reverse-lookup path that many applications still depend on for...