Vulnerabilities3 min read
Exim 'Dead.Letter' Flaw Enables Unauthenticated RCE on Mail Servers
CVE-2026-45185 is a critical use-after-free vulnerability in Exim mail servers using GnuTLS. XBOW researchers call it one of the highest-caliber bugs found in Exim.
Marcus ChenMay 13, 2026