CVE-2026-86060

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-09-10), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — KEV-added this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 1%CVSS: 9.8Exploit: cisa kev · ssvc activeExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
1%
EPSS %ILE
63%
KEV
⚠ Exploited

Published

September 5, 2026

Last Modified

September 11, 2026

Advisory Details (8)

Auto-updated Sep 18, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86060
generic

Reversing MikroTik's Silent Patch: The RouterOS 7.23.4 Fix They Wouldn't Explain | Nick Pratley

https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/
generic

MikroTik · September 2026 vulnerability

https://mikrotik.com/supportsec/september-2026-vulnerability/
generic

7.24.2 [stable] is released! - Announcements - MikroTik community forum

https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800
generic

7.23.4 [long-term] is released! - Announcements - MikroTik community forum

https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801
generic

6.49.21 [long-term] is released! - Announcements - MikroTik community forum

https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802
generic🔴 Active Exploitation

Critical vulnerabilities in MikroTik RouterOS are being actively exploited. Immediate update recommended | CERT Polska

https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/
generic Patch Available

Vulnerabilities in Mikrotik RouterOS software | CERT Polska

https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve

Vendor Advisories for CVE-2026-86060(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 63× in last 7d / 141× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 141 total refreshes for this CVE.

  1. 2026-09-19 18:05 UTCEG score recompute
  2. 2026-09-19 18:05 UTCGHSA enrichment
  3. 2026-09-19 14:22 UTCGHSA enrichment
  4. 2026-09-19 10:38 UTCGHSA enrichment
  5. 2026-09-19 06:53 UTCGHSA enrichment
  6. 2026-09-19 03:10 UTCGHSA enrichment
  7. 2026-09-18 23:28 UTCGHSA enrichment
  8. 2026-09-18 19:45 UTCEG score recompute
  9. 2026-09-18 19:45 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 19:20 UTCCISA KEV update
  12. 2026-09-18 16:02 UTCGHSA enrichment
  13. 2026-09-18 14:15 UTCCISA KEV update
  14. 2026-09-18 12:19 UTCGHSA enrichment
  15. 2026-09-18 08:36 UTCGHSA enrichment
  16. 2026-09-18 04:53 UTCGHSA enrichment
  17. 2026-09-18 01:10 UTCGHSA enrichment
  18. 2026-09-17 21:27 UTCEG score recompute
  19. 2026-09-17 21:27 UTCGHSA enrichment
  20. 2026-09-17 19:32 UTCEPSS rescore
  21. 2026-09-17 17:44 UTCGHSA enrichment
  22. 2026-09-17 14:01 UTCGHSA enrichment
  23. 2026-09-17 10:18 UTCGHSA enrichment
  24. 2026-09-17 06:35 UTCGHSA enrichment
  25. 2026-09-17 02:52 UTCGHSA enrichment
Show 75 more
  1. 2026-09-16 23:07 UTCGHSA enrichment
  2. 2026-09-16 19:25 UTCGHSA enrichment
  3. 2026-09-16 15:42 UTCEG score recompute
  4. 2026-09-16 15:42 UTCGHSA enrichment
  5. 2026-09-16 14:10 UTCCISA KEV update
  6. 2026-09-16 14:09 UTCEPSS rescore
  7. 2026-09-16 11:59 UTCGHSA enrichment
  8. 2026-09-16 08:16 UTCEG score recompute
  9. 2026-09-16 08:16 UTCGHSA enrichment
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-16 04:30 UTCGHSA enrichment
  12. 2026-09-16 00:47 UTCGHSA enrichment
  13. 2026-09-15 21:04 UTCGHSA enrichment
  14. 2026-09-15 17:21 UTCGHSA enrichment
  15. 2026-09-15 13:38 UTCGHSA enrichment
  16. 2026-09-15 09:55 UTCGHSA enrichment
  17. 2026-09-15 06:12 UTCEG score recompute
  18. 2026-09-15 06:12 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 02:28 UTCGHSA enrichment
  22. 2026-09-14 22:44 UTCGHSA enrichment
  23. 2026-09-14 19:24 UTCCISA KEV update
  24. 2026-09-14 19:01 UTCGHSA enrichment
  25. 2026-09-14 15:19 UTCGHSA enrichment
  26. 2026-09-14 11:36 UTCGHSA enrichment
  27. 2026-09-14 07:53 UTCGHSA enrichment
  28. 2026-09-14 04:11 UTCGHSA enrichment
  29. 2026-09-14 00:28 UTCGHSA enrichment
  30. 2026-09-13 20:46 UTCGHSA enrichment
  31. 2026-09-13 17:03 UTCEG score recompute
  32. 2026-09-13 17:03 UTCGHSA enrichment
  33. 2026-09-13 13:20 UTCGHSA enrichment
  34. 2026-09-13 09:36 UTCGHSA enrichment
  35. 2026-09-13 05:54 UTCGHSA enrichment
  36. 2026-09-13 02:12 UTCGHSA enrichment
  37. 2026-09-12 22:29 UTCGHSA enrichment
  38. 2026-09-12 18:46 UTCGHSA enrichment
  39. 2026-09-12 15:03 UTCEG score recompute
  40. 2026-09-12 15:03 UTCGHSA enrichment
  41. 2026-09-12 11:20 UTCGHSA enrichment
  42. 2026-09-12 07:37 UTCGHSA enrichment
  43. 2026-09-12 03:54 UTCGHSA enrichment
  44. 2026-09-12 00:11 UTCGHSA enrichment
  45. 2026-09-11 20:29 UTCGHSA enrichment
  46. 2026-09-11 18:49 UTCCISA KEV update
  47. 2026-09-11 16:46 UTCEG score recompute
  48. 2026-09-11 16:46 UTCGHSA enrichment
  49. 2026-09-11 14:53 UTCEPSS rescore
  50. 2026-09-11 14:53 UTCEPSS rescore
  51. 2026-09-11 13:03 UTCEG score recompute▲ 0.60
  52. 2026-09-11 13:03 UTCGHSA enrichment
  53. 2026-09-11 13:02 UTCNVD updateCVSS v3 → 9.8
  54. 2026-09-11 11:46 UTCEG score recompute
  55. 2026-09-11 11:46 UTCGHSA enrichment
  56. 2026-09-11 08:03 UTCGHSA enrichment
  57. 2026-09-11 04:20 UTCEG score recompute
  58. 2026-09-11 04:20 UTCGHSA enrichment
  59. 2026-09-11 04:00 UTCEG score recompute
  60. 2026-09-11 04:00 UTCGHSA enrichment
  61. 2026-09-11 03:44 UTCGHSA enrichment
  62. 2026-09-11 00:01 UTCEG score recompute
  63. 2026-09-11 00:01 UTCGHSA enrichment
  64. 2026-09-10 20:18 UTCEG score recompute
  65. 2026-09-10 20:18 UTCGHSA enrichment
  66. 2026-09-10 20:10 UTCGHSA enrichment
  67. 2026-09-10 19:55 UTCEG score recompute
  68. 2026-09-10 19:55 UTCGHSA enrichment
  69. 2026-09-10 19:28 UTCCISA KEV update
  70. 2026-09-10 17:54 UTCGHSA enrichment
  71. 2026-09-10 14:11 UTCGHSA enrichment
  72. 2026-09-10 10:29 UTCEG score recompute
  73. 2026-09-10 10:28 UTCGHSA enrichment
  74. 2026-09-10 06:45 UTCGHSA enrichment
  75. 2026-09-10 03:02 UTCGHSA enrichment

Frequently asked(6)

What is CVE-2026-86060?
CVE-2026-86060 is a critical vulnerability published on September 5, 2026. 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…
When was CVE-2026-86060 disclosed?
CVE-2026-86060 was first published in the National Vulnerability Database on September 5, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86060 actively exploited?
Yes. CISA added CVE-2026-86060 to the Known Exploited Vulnerabilities catalog on September 10, 2026, affecting MikroTik RouterOS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2026-86060?
CVE-2026-86060 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2026-86060?
CVE-2026-86060 affects MikroTik RouterOS. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2026-86060?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86060, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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