CVE-2026-71941

Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the diaglogmail function. The vulnerability is caused by concatenating multiple smtpReceiver email addresses into a fixed-size buffer without checking the remaining buffer size. A remote attacker can trigger this...

CVE-1999-0682

Microsoft Exchange 5.5 allows a remote attacker to relay email i.e. spam using encapsulated SMTP addresses, even if the anti-relaying features are enabled...

curl: SMTP CRLF Injection & Protocol Desynchronization in libcurl

Executive Summary A critical security vulnerability has been identified in libcurl's SMTP protocol handler. The vulnerability allows for SMTP Command Smuggling and Protocol Desynchronization by injecting CRLF sequences into email address fields. This can be exploited to bypass security controls,...