CVE-2026-67279
MEDIUMCISA KEVDescription
RouterOS SSH enters the connection protocol after a client-requested rekey even though user authentication was never attempted, allowing an unauthenticated client to open a session channel and send an exec request. On affected builds the server dispatches the command, enabling unauthenticated creation, overwrite, and reconstruction of files in the RouterOS managed file namespace, including support files containing configuration and diagnostic data.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Exploit Intelligence
Moderate risk: more likely to be exploited than 63% of all known CVEs.
Remediation due: 2026-09-28
References
Related Vulnerabilities
Other CWE-841 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-1667 | High | 7.5 | 1.3% | - | Fix |
| CVE-2023-4181 | Medium | 5.4 | 1.1% | - | - |
| CVE-2022-2105 | Critical | 9.4 | 1.1% | - | Fix |
| CVE-2022-2102 | Critical | 9.4 | 0.9% | - | Fix |
| CVE-2026-43974 | High | 7.5 | 0.6% | - | Fix |
| CVE-2026-43937 | High | 8.8 | 0.6% | - | - |
Common questions
How do I fix CVE-2026-67279?
Upgrade routeros to 6.49.21 or later.
Is CVE-2026-67279 being actively exploited?
Yes. CVE-2026-67279 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-09-28. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2026-67279?
CVE-2026-67279 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-67279 affect?
Published advisories record a fix for routeros (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2026-67279
Markdown
[](https://tridentstack.com/cve/CVE-2026-67279)HTML
<a href="https://tridentstack.com/cve/CVE-2026-67279"><img src="https://tridentstack.com/cve/badge/CVE-2026-67279.svg" alt="CVE-2026-67279"></a>This vulnerability is actively exploited in the wild
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-26.