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CVE-2026-86060
CWE-88
Critical
100.9
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
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)
Source: NVD
Signals
- CVSS
- 9.8
- Critical · v3.1
- EPSS
- 6.39%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Sept 2026
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-88
- Published
- 5 Sept 2026
- Last modified 11 Sept 2026
How to read these signals: RPS · EPSS · CISA KEV · Data sources
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curl -H "Authorization: Bearer dsec_live_xxxxxxxx" \
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Data as of 7 Oct 2026, 05:16 UK time