ExploitedIn CISA KEVFix available

CVE-2026-86060

Q: Is CVE-2026-86060 actively exploited?

Yes. CVE-2026-86060 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-09-13.

Q: What is the CVSS score for CVE-2026-86060?

CVE-2026-86060 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Exploitation confirmed. First attested on 2026-09-05 by CISA-ADP, CISA KEV, GCVE · enisa-cnw-kev, GCVE · previdian.

Published2026-09-05
Fixed in7.24.2 · 7.23.4 · 6.49.21
WeaknessCWE-88

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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)

Timeline

dates in UTC

2026-09-05Listed as exploited by GCVEGCVE
2026-09-05Exploitation first reportedGCVE
2026-09-0520:17CVE publishedNVD
2026-09-10Added to the CISA KEV catalogCISA KEV
2026-09-1019:48SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-10-27 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-86060?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-86060?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Mikrotik routeros

Branch	Affected	Fixed in	Source
7.24	≥ 7.24, < 7.24.2	7.24.2	NVD
7.x	≥ 7.0, < 7.23.4	7.23.4	NVD
6.x	≥ 6.0, < 6.49.21	6.49.21	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Mikrotik routeros to 7.24.2 · 7.23.4 · 6.49.21
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.due 2026-09-13

Advisories and patches

cert.plMitigation
forum.mikrotik.comRelease Notes
forum.mikrotik.comRelease Notes
forum.mikrotik.comRelease Notes
mikrotik.comVendor Advisory

Detection

read 2026-10-28 00:45 UTC

Nuclei template: none so far
Exploit-DB: EDB-52683
Proof-of-concept repositories: 3 repositories, unverifiedbahirul/cve-2026-86060digiprosec/MicroTrickgagaltotal/CVE-2026-mikrotik-poc

CISA Known Exploited Vulnerability

Date Added: 2026-09-10
Patch Due Date: 2026-09-13
Ransomware Use: Unknown
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.

Sources

CISA KEVKEV entry2026-09-10
GCVEexploitation2026-09-05
CISA-ADPSSVC decisionactive2026-09-10
OpenCVESSVC decisionactive—
CNACVSS 4.09.2read 2026-10-23
NVDCVSS 3.19.8read 2026-10-23
CNAweakness (CWE)CWE-88read 2026-10-23
FIRST EPSSEPSS score6.4 %2026-10-26
PoC-in-GitHubproof of concept3read 2026-10-28
Exploit-DBdetectionread 2026-10-28

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: 2026-09-05
Last Modified: 2026-09-11
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-86060?

Is CVE-2026-86060 actively exploited?

Yes. CVE-2026-86060 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-09-13.

What is the CVSS score for CVE-2026-86060?

CVE-2026-86060 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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