CVE-2026-86060 critical vulnerability summary
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....
CVE-2026-86060 is a Critical severity vulnerability notice that security teams should triage for exposure in their own environments.
What to review
The affected area appears to involve RouterOS contains an argument-handling flaw in the SSH login path involving usernames that begin with a prohibited character. Administrators should compare this notice against their asset inventory, dependency list, and externally exposed services.
Recommended action
Confirm whether the affected product or library is present, review vendor guidance, prioritize patching based on internet exposure and severity, and monitor logs for suspicious behavior tied to the affected component.
This brief is based on information from Tenable Newest CVEs . Please refer to the original source for the complete advisory and vendor-specific guidance.
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