Classification: Severe, Solution: Official Fix, Exploit Maturity: Not Defined, CVSSv3.1: 8.8, CVEs: , Summary: A remote authenticated user with read-only credentials can specify a full administrative account during stage two to obtain an admin session and persistently escalate privileges without knowing the admin password. Upgrade MikroTik RouterOS to version 7.24.5 (stable), 7.25rc1 (testing), or a later version. Verification tests confirm that the split-principal authentication flow is…
CERT Polska warns that attackers are actively exploiting a chain of critical MikroTik RouterOS flaws to seize control of routers exposed to the internet. Although the warning comes from Poland’s national cybersecurity response team, MikroTik routers are sold worldwide, including in the US. The vulnerabilities can affect users anywhere if their router is running a vulnerable version of RouterOS and its SSH remote-management service is accessible from the internet. Attackers are exploiting two…
MikroTik heeft meerdere kwetsbaarheden verholpen in RouterOS. De eerste kwetsbaarheid betreft een fout in de SSH-authenticatiemechanisme waarbij de exponent van RSA-sleutels niet werd geverifieerd. Hierdoor kunnen aanvallers RSA-handtekeningen vervalsen en ongeautoriseerde SSH-toegang verkrijgen. De tweede kwetsbaarheid betreft een probleem met gebruikersnamen die beginnen met een verboden teken, waardoor de trusted policy mask kan worden gemanipuleerd en privilege escalation mogelijk is binnen…
Mikrotik released a patch late last week for an already-exploited vulnerability. The vulnerability allows an SSH authentication bypass and is already being exploited. At this point, assume compromise. Attackers have been adding new accounts to affected devices to maintain access after a patch is installed. The patch will attempt to detect compromise and set the "Flagged" status. Details: https://mikrotik.com/supportsec/september-2026-vulnerability -- Johannes B. Ullrich, Ph.D. , Dean of…