CVE-2026-86060
criticalpriority · act · 90OT risk · criticalKEV · exploitedEU KEV · CERT.PLEPSS 0.064 · 94 %ileexploit · PoCDENLRUUSadded 2026-09-10remediate by 2026-09-13
required action Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
EU KEVflagged by CERT.PLreported 2026-09-05patched 2026-09-03
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)
EPSS · scored 2026-10-27
MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability
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)
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (4)
Public proof-of-concept and weaponised exploit code.
- bahirul/cve-2026-86060Mikrotik CVE-2026-86060 Score 9.2 CriticalPoC · poc_in_github
- digiprosec/MicroTrickcve-2026-86060 PoCPoC · poc_in_github
affected products (15)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- NCSC-2026-0345Kwetsbaarheden verholpen in MikroTik RouterOSNL2026-09-08csaf · ncsc_nlNL
MikroTik heeft meerdere kwetsbaarheden verholpen in RouterOS.
- WID-SEC-W-2026-3193MikroTik RouterOS: Mehrere SchwachstellenDeutsch2026-09-06csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in MikroTik RouterOS ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Informationen offenzulegen, um einen Denial of Service Zustand herbeizuführen und um die Kontrolle über betroffene Geräte zu übernehmen.
also known as (1)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8) nvd
External citations — patches, advisories, analysis.
- https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve
- https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/
- https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802
- https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801
- https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800
- https://mikrotik.com/supportsec/september-2026-vulnerability/
- https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86060
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