9.2Kritik KEV

CVE-2026-86060SSH session privilege manipulation via a crafted username in Mikrotik RouterOS

Mikrotik RouterOS Yayım: (1 ay önce)

Aktif olarak istismar ediliyor — MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability

CISA bu açığın gerçek saldırılarda kullanıldığını 10.09.2026 tarihinde doğruladı. ABD federal kurumları için düzeltme son tarihi: 13.09.2026.

Gerekli işlem: 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. https://mikrotik.com/supportsec/september-2026-vulnerability ; 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

Açıklama

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)

Zayıflık türü (CWE): CWE-88

Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.

Etkilenen ürünler ve sürümler

ÜreticiÜrünSürümler
Mikrotik RouterOS 7.24 – < 7.24.2, 7.0.0 – < 7.23.4, 6.0.0 – < 6.49.21

Kaynaklar ve yamalar

CPE eşleşmeleri (NVD) (3)

  • cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:* ≥ 6.0 < 6.49.21
  • cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:* ≥ 7.0 < 7.23.4
  • cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:* ≥ 7.24 < 7.24.2