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Overview

  • Mikrotik
  • RouterOS

05 Sep 2026
Published
05 Sep 2026
Updated

CVSS v4.0
HIGH (8.8)
EPSS
0.44%

KEV

Description

RouterOS accepts a "related" btest connection before the corresponding primary session has completed authentication. An unauthenticated client can use this state to start an IPv4 UDP test. With "random-data=false", the sender transmits an uninitialized tail from a kernel packet buffer. A separate unchecked, inverted packet-size interval causes unsigned integer underflow, anomalously large fragmented output, and can restart the RouterOS kernel. This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)

Statistics

  • 1 Post

Last activity: 11 hours ago

Fediverse

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⚠️ CRITICAL: Hackers exploit new MikroTik RouterOS flaws to hijack routers

Attackers are actively exploiting two chained critical vulnerabilities in MikroTik RouterOS (CVE-2026-67276 and CVE-2026-86060) to achieve full admin control of exposed routers. A third flaw (CVE-2026-67277) in the bandwidth-test service can cause memory leaks or crashes. Any unpatched MikroTik rou…

threatnoir.com/focus

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