Mikrotik: >> Routeros >> 7.23.4 Security Vulnerabilities
MikroTik RouterOS accepts malformed RSA/PKCS#1 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 the root’s public certificate - without its private key - to forge a trusted intermediate and issue certificates for arbitrary hostnames, enabling TLS server impersonation. The same permissive verification also undermines RSA-based SSH authentication.
This issue affects only 7.x branch was fixed in versions: 7.23.6 (Long-term) and 7.24.3 (Stable).
Releases 7.23.4 and 7.24.2 included an incomplete fix.
CVSS Score
6.3
EPSS Score
0.003
Published
2026-09-05
In MikroTik RouterOS through 2021-01-04, the hotspot login page is vulnerable to reflected XSS via the target parameter.
CVSS Score
6.1
EPSS Score
0.009
Published
2021-01-04
An issue was discovered in Mikrotik RouterOS. Crafting a packet that has a size of 1 byte and sending it to an IPv6 address of a RouterOS box with IP Protocol 97 will cause RouterOS to reboot imminently. All versions of RouterOS that supports EoIPv6 are vulnerable to this attack.
CVSS Score
7.5
EPSS Score
0.043
Published
2020-03-02