MikroTik RouterOS is widely deployed in networking infrastructure; a remote SSH auth bypass enabling account takeover can disrupt networks and receive broad attention.
CVE-2026-67276
SSH auth bypass in MikroTik RouterOS allows account takeover via crafted RSA key.
Is CVE-2026-67276 being exploited?
Not confirmed. CVE-2026-67276 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.24% probability of exploitation in the next 30 days.
How severe is CVE-2026-67276?
CVE-2026-67276 is rated Critical with a CVSS score of 9.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-67276?
Yes. A fix has been recorded for CVE-2026-67276. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-67276 affect?
CVE-2026-67276 affects MikroTik RouterOS (versions prior to 6.49.21, 7.23.4, 7.24.2). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-67276?
Upgrade to 6.49.21, 7.23.4 or 7.24.2+; restrict SSH access and rotate keys.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote SSH authentication bypass: attacker can open an SSH command channel as a target user without possessing the private key.
Immediate action required
- affected>= 7.24 and < 7.24.2
- affected>= 7.9 and < 7.23.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.