Contact
Red Hot Cyber
Cybersecurity, Cybercrime News and Vulnerability Analysis
Home

CVE-2026-67279

View the latest critical CVEs issued
This is a free service offered by Red Hot Cyber to the community. It allows you to view, on a single page, information about a single CVE from the National Vulnerability Database (NVD) and the National Institute of Standards and Technology (NIST) of the United States of America, the Forum of Incident Response and Security Teams (FIRST) regarding the EPSS score and percentile, data from the KEV catalog of the Cybersecurity and Infrastructure Security Agency (CISA), as well as selected resources from Red Hot Cyber and other international sources.

National Vulnerability Database Information

Description: RouterOS SSH enters the connection protocol after a client-requested rekey even though user authentication was never attempted, allowing an unauthenticated client to open a session channel and send an exec request. On affected builds the server dispatches the command, enabling unauthenticated creation, overwrite, and reconstruction of files in the RouterOS managed file namespace, including support files containing configuration and diagnostic data.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)

CVSS Base Score: 6.5 (v3.1)

The CVSS Base Score is a score from 0 to 10 that represents the intrinsic severity of a vulnerability. A higher score indicates greater severity.

Value
0.02.55.07.510.0
Published on: 09/05/2026 20:17:18
Last modified: 09/26/2026 04:17:47
NIST: CVE source from the National Vulnerability Database (NVD)

CVSS Metrics Details

  • Base Severity: MEDIUM
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: LOW
  • Integrity Impact: LOW
  • Availability Impact: NONE

Common Weakness Enumeration (CWE)

Database CWE: v4.18

CWE-841: Improper Enforcement of Behavioral Workflow ↗

The product supports a session in which more than one behavior must be performed by an actor, but it does not properly ensure that the actor performs the behaviors in the required sequence.

Fonte: MITRE CWE


FIRST Information

EPSS Score: 0.0103

The EPSS (Exploit Prediction Scoring System) is a score from 0 to 1 that indicates the probability that a vulnerability will be exploited in the real world in the next 30 days. A higher value indicates a greater likelihood of exploitation.

Value
0.00.250.50.751.0

Percentile: 0.6239

The Percentile indicates how much higher this vulnerability's EPSS score is compared to all other vulnerabilities in the EPSS database. For example, a percentile of 0.90 (90%) means that 90% of vulnerabilities have an EPSS score equal to or lower than the current one.

Value
0.00.250.50.751.0

*Data updated as of: 2026-10-04


CISA Information (Known Exploited Vulnerabilities)

The CISA KEV Catalog lists vulnerabilities that have been actively exploited in the real world. If a CVE is present in this catalog, it indicates that the threat is immediate and mitigation should be a top priority.

CVE CVE-2026-67279 IS PRESENT in the CISA KEV Catalog!

  • Vulnerability Name: Mikrotik RouterOS Improper Enforcement of Behavioral Workflow Vulnerability
  • Short Description: Mikrotik RouterOS contains an improper enforcement of behavioral workflow vulnerability that could allow an unauthenticated client to open a session channel and send an exec request. This vulnerability can be chained to achieve unauthenticated exploitation of CVE-2026-86060.
  • Date Added to KEV: 09/25/2026
  • Vendor/Product: MikroTik / RouterOS
  • 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: 09/28/2026

Articles published on Red Hot Cyber


NVD References

Exploit PoC from GitHub

  • HackSpeak/CVE-2026-67279: MikroTrick (MikroTik RouterOS SSH takeover chain) PoC mirror - CVE-2026-67279 + CVE-2026-86060 (+67276); for authorized lab testing
  • tc4dy/CVE-2026-67279-86060-Toolkit: CVE-2026-67279 + CVE-2026-86060 – MikroTrick MikroTik RouterOS SSH Pre-Auth Takeover (CVSS 9.2) | Red/Blue Team suite. 2 tools: Full Exploit (rekey bypass, fd-2 policy swap, full-admin shell, plant, mass scan, SOCKS5/Tor, stealth) & SafeDetect (banner/version audit, IoC guidance, JSON/CSV/HTML). Use Ethically & Safety only.
  • gagaltotal/CVE-2026-mikrotik-poc: CVE-2026-86060 - CVE-2026-67279 - CVE-2026-67276 RouterOS SSH