Vulnerability-Lookup

CVE-2026-86060 (GCVE-0-2026-86060)

Vulnerability from cvelistv5 – Published: 2026-09-05 20:00 – Updated: 2026-09-10 19:58

CISA ENISA

Title

SSH session privilege manipulation via a crafted username in Mikrotik RouterOS

Summary

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)

Severity

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

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 19:48 UTC

CWE

CWE-88 - Improper neutralization of argument delimiters in a command ('argument injection')

Assigner

CERT-PL ENISA root

References

8 references

URL	Tags
https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve	third-party-advisory
https://cert.pl/en/posts/2026/09/vulnerabilities-…	technical-description
https://npratley.net/reversing-mikrotiks-silent-p…	exploit
https://mikrotik.com/supportsec/september-2026-vu…	vendor-advisory
https://forum.mikrotik.com/t/6-49-21-long-term-is…	release-notes
https://forum.mikrotik.com/t/7-23-4-long-term-is-…	release-notes
https://forum.mikrotik.com/t/7-24-2-stable-is-rel…	release-notes
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version	CPE status
Mikrotik	RouterOS	Affected: 7.24 , < 7.24.2 (custom) Affected: 7.0.0 , < 7.23.4 (custom) Affected: 6.0.0 , < 6.49.21 (custom) cpe:2.3:a:mikrotik:routeros:::::::: cpe:2.3:a:mikrotik:routeros:::::::: cpe:2.3:a:mikrotik:routeros::::::::

Credits

Sławomir Rozbicki (CERT.PL)

CISA

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: d873363f-1dc6-49ed-b969-d89b492dba08

Vulnerability ID: CVE-2026-86060

Status: Confirmed

Status Updated: 2026-09-10 00:00 UTC

Exploited: Yes

Timestamps

First Seen: 2026-09-10

Asserted: 2026-09-10

Scope

Notes: MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability | Affected: MikroTik / RouterOS | Description: MikroTik RouterOS contains an improper neutralization of argument delimiters in a command vulnerability which allows an attacked to change the trusted RouterOS policy mask, leading to privilege escalation. | 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 date: 2026-09-13 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-86060

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details

Cwes	CWE-88
Feed	CISA Known Exploited Vulnerabilities Catalog
Product	RouterOS
Due Date	2026-09-13
Date Added	2026-09-10
Vendorproject	MikroTik
Vulnerabilityname	MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability
Knownransomwarecampaignuse	Unknown

References

CVE-2026-86060

Created: 2026-09-10 20:00 UTC | Updated: 2026-09-10 20:00 UTC

ENISA

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: e9f02064-3153-49ba-ab70-db308b97c0fb

Vulnerability ID: CVE-2026-86060

Status: Confirmed

Status Updated: 2026-09-05 00:00 UTC

Exploited: Yes

Timestamps

First Seen: 2026-09-05

Asserted: 2026-09-05

Scope

Notes: MikroTrick | Affected: MikroTik / RouterOS | 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) | Patched since: 2026/09/03 | Exploitation type: unknown | CWEs: CWE-88 | Origin source: CERT.PL | Notes: https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/

Evidence

Type: Csirt Report

Signal: Successful Exploitation

Confidence: 75%

Source: enisa-cnw-kev

Details

Cwes	CWE-88
Euvd	EUVD-2026-72029
Notes	https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/
Catalog	ENISA / EU CSIRTs Network (CNW) KEV JSON
Product	RouterOS
Datereported	2026/09/05
Originsource	CERT.PL
Patchedsince	2026/09/03
Vendorproject	MikroTik
Exploitationtype	unknown
Vulnerabilityname	MikroTrick
Threatactorsexploiting

References

Created: 2026-09-05 22:00 UTC | Updated: 2026-09-05 22:00 UTC

Show details on NVD website

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FKIE_CVE-2026-86060

Vulnerability from fkie_nvd - Published: 2026-09-05 20:17 - Updated: 2026-09-09 05:18

CISA ENISA

Severity

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

Summary

References

	URL	Tags
	cvd@cert.pl	https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve
	cvd@cert.pl	https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/
	cvd@cert.pl	https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802
	cvd@cert.pl	https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801
	cvd@cert.pl	https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800
	cvd@cert.pl	https://mikrotik.com/supportsec/september-2026-vulnerability/
	cvd@cert.pl	https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "RouterOS",
          "vendor": "Mikrotik",
          "versions": [
            {
              "lessThan": "7.24.2",
              "status": "affected",
              "version": "7.24",
              "versionType": "custom"
            },
            {
              "lessThan": "7.23.4",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "custom"
            },
            {
              "lessThan": "6.49.21",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "cvd@cert.pl"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "RouterOS contains an argument-handling flaw in the SSH login\npath involving usernames that begin with a prohibited character, allowing for the trusted RouterOS policy mask\u00a0to be changed, leading to privilege escalation. Exploitation requires an unauthenticated SSH session to reach the RouterOS login helper.This issue was fixed in versions:\u00a06.49.21 (Long-term),\u00a07.23.4 (Long-term)\u00a0and\u00a07.24.2 (Stable)"
    }
  ],
  "id": "CVE-2026-86060",
  "lastModified": "2026-09-09T05:18:19.360",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.2,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cvd@cert.pl",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-86060",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-08T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-05T20:17:18.703",
  "references": [
    {
      "source": "cvd@cert.pl",
      "url": "https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/"
    },
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      "url": "https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802"
    },
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      "source": "cvd@cert.pl",
      "url": "https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://mikrotik.com/supportsec/september-2026-vulnerability/"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/"
    }
  ],
  "sourceIdentifier": "cvd@cert.pl",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-88"
        }
      ],
      "source": "cvd@cert.pl",
      "type": "Secondary"
    }
  ]
}

GHSA-6425-CJXV-52GP

Vulnerability from github – Published: 2026-09-05 21:31 – Updated: 2026-09-05 21:31

Details

Severity

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-86060"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-88"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-05T20:17:18Z",
    "severity": "CRITICAL"
  },
  "details": "RouterOS contains an argument-handling flaw in the SSH login\npath involving usernames that begin with a prohibited character, allowing for the trusted RouterOS policy mask\u00a0to be changed, leading to privilege escalation. Exploitation requires an unauthenticated SSH session to reach the RouterOS login helper.This issue was fixed in versions:\u00a06.49.21 (Long-term),\u00a07.23.4 (Long-term)\u00a0and\u00a07.24.2 (Stable)",
  "id": "GHSA-6425-cjxv-52gp",
  "modified": "2026-09-05T21:31:20Z",
  "published": "2026-09-05T21:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86060"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited"
    },
    {
      "type": "WEB",
      "url": "https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802"
    },
    {
      "type": "WEB",
      "url": "https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801"
    },
    {
      "type": "WEB",
      "url": "https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800"
    },
    {
      "type": "WEB",
      "url": "https://mikrotik.com/supportsec/september-2026-vulnerability"
    },
    {
      "type": "WEB",
      "url": "https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

NCSC-2026-0345

Vulnerability from csaf_ncscnl - Published: 2026-09-08 09:46 - Updated: 2026-09-08 09:46

Summary

Kwetsbaarheden verholpen in MikroTik RouterOS

Notes

The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.

Feiten: MikroTik heeft meerdere kwetsbaarheden verholpen in RouterOS.

Interpretaties: De eerste kwetsbaarheid betreft een fout in de SSH-authenticatiemechanisme waarbij de exponent van RSA-sleutels niet werd geverifieerd. Hierdoor kunnen aanvallers RSA-handtekeningen vervalsen en ongeautoriseerde SSH-toegang verkrijgen. De tweede kwetsbaarheid betreft een probleem met gebruikersnamen die beginnen met een verboden teken, waardoor de trusted policy mask kan worden gemanipuleerd en privilege escalation mogelijk is binnen het SSH-loginproces. De derde kwetsbaarheid maakt het mogelijk voor niet-geauthenticeerde clients om een IPv4 UDP-test te starten die door onjuiste verwerking van pakketten in de kernel kan leiden tot kernel restarts, wat de beschikbaarheid van het systeem beïnvloedt. CERT Polen geeft aan actief misbruik te hebben waargenomen, gericht op routers waarbij de SSH service publiek toegankelijk is. In deze gevallen zijn meerdere van bovenstaande kwetsbaarheden gecombineerd om volledige controle over de getroffen routers te verkrijgen. Het is goed gebruik om SSH toegang niet open te stellen aan het internet, maar af te schermen via een VPN en/of whitelist.

Oplossingen: MikroTik heeft updates uitgebracht in RouterOS versies 6.49.21, 7.23.4 en 7.24.2 om deze kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.

Kans: medium

Schade: high

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

CWE-191: Integer Underflow (Wrap or Wraparound)

CWE-306: Missing Authentication for Critical Function

CWE-347: Improper Verification of Cryptographic Signature

CVE-2026-67276

RouterOS 7.x contained a critical SSH authentication vulnerability where only the RSA key type and modulus were verified, ignoring the exponent, enabling signature forgery and unauthorized access, fixed in versions 7.23.4 and 7.24.2.

CWE-347 - Improper Verification of Cryptographic Signature

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
vers:unknown/* MikroTik / RouterOS		vers:unknown/*

CVE-2026-86060

RouterOS versions 6.49.21, 7.23.4, and 7.24.2 fixed a vulnerability in the SSH login process where usernames starting with a prohibited character could manipulate the trusted policy mask to escalate privileges.

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

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
vers:unknown/* MikroTik / RouterOS		vers:unknown/*

CVE-2026-67277

RouterOS versions 6.49.21, 7.23.4, and 7.24.2 fixed a vulnerability where unauthenticated clients could trigger an IPv4 UDP test causing kernel restarts due to improper packet handling.

CWE-306 - Missing Authentication for Critical Function

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
vers:unknown/* MikroTik / RouterOS		vers:unknown/*

References

5 references

URL	Category
https://cert.pl/en/posts/2026/09/vulnerabilities-…	external
https://mikrotik.com/supportsec/september-2026-vu…	external
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-…	self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-…	self
https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-…	self

JSON

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{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "MikroTik heeft meerdere kwetsbaarheden verholpen in RouterOS.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De eerste kwetsbaarheid betreft een fout in de SSH-authenticatiemechanisme waarbij de exponent van RSA-sleutels niet werd geverifieerd. Hierdoor kunnen aanvallers RSA-handtekeningen vervalsen en ongeautoriseerde SSH-toegang verkrijgen. De tweede kwetsbaarheid betreft een probleem met gebruikersnamen die beginnen met een verboden teken, waardoor de trusted policy mask kan worden gemanipuleerd en privilege escalation mogelijk is binnen het SSH-loginproces. De derde kwetsbaarheid maakt het mogelijk voor niet-geauthenticeerde clients om een IPv4 UDP-test te starten die door onjuiste verwerking van pakketten in de kernel kan leiden tot kernel restarts, wat de beschikbaarheid van het systeem be\u00efnvloedt.\n\nCERT Polen geeft aan actief misbruik te hebben waargenomen, gericht op routers waarbij de SSH service publiek toegankelijk is. In deze gevallen zijn meerdere van bovenstaande kwetsbaarheden gecombineerd om volledige controle over de getroffen routers te verkrijgen. Het is goed gebruik om SSH toegang niet open te stellen aan het internet, maar af te schermen via een VPN en/of whitelist.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "MikroTik heeft updates uitgebracht in RouterOS versies 6.49.21, 7.23.4 en 7.24.2 om deze kwetsbaarheden te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Improper Neutralization of Argument Delimiters in a Command (\u0027Argument Injection\u0027)",
        "title": "CWE-88"
      },
      {
        "category": "general",
        "text": "Integer Underflow (Wrap or Wraparound)",
        "title": "CWE-191"
      },
      {
        "category": "general",
        "text": "Missing Authentication for Critical Function",
        "title": "CWE-306"
      },
      {
        "category": "general",
        "text": "Improper Verification of Cryptographic Signature",
        "title": "CWE-347"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://mikrotik.com/supportsec/september-2026-vulnerability/"
      }
    ],
    "title": "Kwetsbaarheden verholpen in MikroTik RouterOS",
    "tracking": {
      "current_release_date": "2026-09-08T09:46:33.547159Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0345",
      "initial_release_date": "2026-09-08T09:46:33.547159Z",
      "revision_history": [
        {
          "date": "2026-09-08T09:46:33.547159Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
                  "name": "vers:unknown/*",
                  "product_id": "CSAFPID-1"
                }
              }
            ],
            "category": "product_name",
            "name": "RouterOS"
          }
        ],
        "category": "vendor",
        "name": "MikroTik"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-67276",
      "cwe": {
        "id": "CWE-347",
        "name": "Improper Verification of Cryptographic Signature"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Verification of Cryptographic Signature",
          "title": "CWE-347"
        },
        {
          "category": "description",
          "text": "RouterOS 7.x contained a critical SSH authentication vulnerability where only the RSA key type and modulus were verified, ignoring the exponent, enabling signature forgery and unauthorized access, fixed in versions 7.23.4 and 7.24.2.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-67276 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-67276.json"
        }
      ],
      "title": "CVE-2026-67276"
    },
    {
      "cve": "CVE-2026-86060",
      "cwe": {
        "id": "CWE-88",
        "name": "Improper Neutralization of Argument Delimiters in a Command (\u0027Argument Injection\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Neutralization of Argument Delimiters in a Command (\u0027Argument Injection\u0027)",
          "title": "CWE-88"
        },
        {
          "category": "description",
          "text": "RouterOS versions 6.49.21, 7.23.4, and 7.24.2 fixed a vulnerability in the SSH login process where usernames starting with a prohibited character could manipulate the trusted policy mask to escalate privileges.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "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",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-86060 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-86060.json"
        }
      ],
      "title": "CVE-2026-86060"
    },
    {
      "cve": "CVE-2026-67277",
      "cwe": {
        "id": "CWE-306",
        "name": "Missing Authentication for Critical Function"
      },
      "notes": [
        {
          "category": "other",
          "text": "Missing Authentication for Critical Function",
          "title": "CWE-306"
        },
        {
          "category": "description",
          "text": "RouterOS versions 6.49.21, 7.23.4, and 7.24.2 fixed a vulnerability where unauthenticated clients could trigger an IPv4 UDP test causing kernel restarts due to improper packet handling.",
          "title": "Summary"
        },
        {
          "category": "general",
          "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
          "title": "CVSSV4"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-67277 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-67277.json"
        }
      ],
      "title": "CVE-2026-67277"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-86060 (GCVE-0-2026-86060)

CISA

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Vendor Report Successful Exploitation Confidence: 80% Source: cisa-kev

Details

References

ENISA

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Csirt Report Successful Exploitation Confidence: 75% Source: enisa-cnw-kev

Details

References

FKIE_CVE-2026-86060

GHSA-6425-CJXV-52GP

NCSC-2026-0345

Tags

Sightings

Nomenclature