MikroTik RouterOS Stack-Based Buffer Overflow Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 08/09/2022. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| RouterOS | Versions not published yet (product named by CISA KEV) | |
A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system. The overflow occurs before authentication takes place, so it is possible for an unauthenticated remote attacker to exploit it. All architectures and all devices running RouterOS before versions 6.41.3/6.42rc27 are vulnerable.
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