Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2026-86060

RouterOS SSH session privilege manipulation Privilege Escalation

Mikrotik / RouterOS · affected before 7.24.2

View live feed Monitor via API Watch CVE-2026-86060
Severity
CVSS 9.2 · Critical
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
1.1%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-86060 is an unauthenticated vulnerability affecting Mikrotik RouterOS. RouterOS contains an argument-handling flaw in the SSH login path involving usernames that begin with a prohibited character, allowing...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Mikrotik / RouterOS affected before 7.24.2.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

RouterOS SSH session privilege manipulation Privilege Escalation

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)

Mikrotik Affected
RouterOS
Before 7.24.2 Before 7.23.4 Before 6.49.21
View vendor advisory (opens in new tab)
Published
05 Sep 2026
Exploitation Reported
10 Sep 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

edge cisa

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CERT Polska

Recorded 10 Sep 2026

A trusted third party reported exploitation.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

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Source Added
CERT Polska First 2026-09-10 16:26 UTC
CISA 2026-09-10 19:50 UTC
CVE 2026-09-10 20:01 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

9.2 Critical
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS

1.1%

Weaknesses

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') CWE-88

Recent mention · CERT Polska EN

Vulnerabilities in Mikrotik RouterOS software

CERT Polska has found 6 vulnerabilities (from CVE-2026-67276 to CVE-2026-67279, CVE-2026-67281 and CVE-2026-86060) in Mikrotik RouterOS software.

Read full advisory

Timeline

From disclosure to observed exploitation

  1. 20:01 UTC

    KEV confirmed by CVE

    Exploitation attested by an external source

  2. 19:50 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  3. 16:26 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  4. 20:00 UTC

    CVE published

    Vulnerability disclosed publicly

  5. 19:32 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-86060

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-86060",
  "confidence": "Confirmed",
  "cvss_score": 9.2,
  "cvss_estimated": false,
  "epss_score": 0.01057,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}