CVE-2026-67278

MikroTik RouterOS accepts malformed RSA/PKCS1 v1.5 signatures across RSA-based services, including TLS/X.509 certificate validation and SSH host-key authentication. Because its trust store includes an e=3 root CA, an attacker controlling or redirecting an outbound RouterOS TLS connection can use...

CVE-2026-67278 TLS server impersonation possible in Mikrotik RouterOS

MikroTik RouterOS accepts malformed RSA/PKCS1 v1.5 signatures across RSA-based services, including TLS/X.509 certificate validation and SSH host-key authentication. Because its trust store includes an e=3 root CA, an attacker controlling or redirecting an outbound RouterOS TLS connection can use...

CVE-2026-67278 TLS server impersonation possible in Mikrotik RouterOS

MikroTik RouterOS accepts malformed RSA/PKCS1 v1.5 signatures across RSA-based services, including TLS/X.509 certificate validation and SSH host-key authentication. Because its trust store includes an e=3 root CA, an attacker controlling or redirecting an outbound RouterOS TLS connection can use...

PT-2026-86453

Name of the Vulnerable Software and Affected Versions MikroTik RouterOS versions prior to 6.49.21 MikroTik RouterOS versions prior to 7.23.4 MikroTik RouterOS versions prior to 7.24.2 Description RouterOS accepts malformed RSA/PKCS1 v1.5 signatures during X.509 validation. Due to the inclusion of...