CVE-2026-86060

MikroTik RouterOS privilege escalation, confirmed exploited in the wild.

MikroTik RouterOS contains an improper neutralization of argument delimiters in a command vulnerability which allows an attacker to change the trusted RouterOS policy mask, leading to privilege escalation.

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6.4%chance of exploitation in the next 30 days (EPSS), 93rd percentile

10 Sepadded to CISA's Known Exploited Vulnerabilities list, 2026

13 Sepfederal remediation deadline, already passed

Passedpast the deadline: patch now

CISA's name for it	MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability
Vendor and product	MikroTik · RouterOS
Type	privilege escalation · CWE-88
Exploited	Confirmed by CISA listed 10 September 2026
Likelihood	more likely to be exploited than most
Deadline	13 September 2026 · already passed
Used in ransomware	Not reported
Advisories	mikrotik.com ↗ · www.cisa.gov ↗ · www.cisa.gov ↗ · nvd.nist.gov ↗

What to do

Three steps, in this order

Step 1

Install the update on every affected system, servers and workstations alike.

Step 2

Escalation bugs are chained after a first foothold: check for other exposures an attacker could start from.

Step 3

Review who holds administrative rights, and alert on new ones.

CISA's 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.

CISA's 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.

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Questions

CVE-2026-86060 in short

Is CVE-2026-86060 being exploited?

Yes. CISA added CVE-2026-86060 to its Known Exploited Vulnerabilities catalogue on 10 September 2026, which it does only on evidence of exploitation in the wild.

What is the CISA deadline for CVE-2026-86060?

US federal agencies must remediate it by 13 September 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.

How likely is CVE-2026-86060 to be exploited in the next 30 days?

FIRST's Exploit Prediction Scoring System gives it 6.4%, the 93rd percentile of every CVE it scores.

How do I fix CVE-2026-86060?

Install the update on every affected system, servers and workstations alike. Escalation bugs are chained after a first foothold: check for other exposures an attacker could start from. Review who holds administrative rights, and alert on new ones.

Same vendor

Other MikroTik vulnerabilities being exploited

CVE	Product	Type	Listed
CVE-2026-67279	RouterOS	exploited vulnerability	25 September 2026
CVE-2026-67277	RouterOS	authentication bypass	10 September 2026

Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.