CVE WatchSep 8, 2026

CVE-2026-86060

RouterOS contains an argument-handling flaw in the SSH login path involving usernames that begin with a prohibited character, allowing for t

CVSS

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No CVSS

EPSS

0.4%

p33

KEV

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Exploit Today

0-100

Published: Sep 5, 2026 · Last modified: Sep 8, 2026 · CWE-88

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-09-062026-09-07

Technical description

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)

Official references

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