Vulnerability Analysis
SSH session privilege manipulation via a crafted username in Mikrotik RouterOS
CVE-2026-86060
RouterOS contains an argument-handling flaw in the SSH login path involving usernames that begin with a prohibited character, allowing for the trusted RouterOS policy mask to be changed, leading to privilege escalation. Exploitation requires an unauthenticated SSH session to reach the RouterOS login helper.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
CISA KEV
SSVC: Active Exploitation
Automatable
CVSS Base Score
9.2
CRITICAL
Exploitability:-
Impact Score:-
Temporal Score:-
EPSS:0.40%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2026-09-10
Ransomware Use
Unknown
KEV Due Date
2026-09-13
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
0.401%
EPSS Percentile
33.6th pct
GHSA ID
GitHub Severity
CRITICAL
SSVC Exploitation
Active
SSVC Automatable
Yes
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| Discovered Via | - |
| Record Completeness | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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