MikroTik RouterOS: 2 flaws used in attacks; attackers can get in without a password
OFFICIAL NAMES: MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability · MikroTik RouterOS Missing Authentication for Critical Function Vulnerability
WHAT IT IS · ROUTERS, CAMERAS AND DEVICESRouters, cameras and recorders are often forgotten and rarely updated.
DO THIS FIRSTUpdate it or replace it. Never leave its admin page open to the internet. Not sure if you use it? Send this page to your IT provider or security lead and ask.
TECHNICAL SUMMARY MikroTik RouterOS contains a missing authentication for critical function vulnerability which allows kernel memory disclosure and denial of service in the btest service.
WHY THIS VERDICT Attacks are confirmed. The vulnerability is 65 days old, so many systems are likely still unpatched. The severity score is critical (9.2).
WHY IT RANKS HERE Exploitation is confirmed by an authoritative source.
- HIGHEST CONFIRMED RUNG
- EXPLOITED
- CISA KEV
- LISTED
- EXPLOIT CODE
- PROOF OF CONCEPT
How far has it climbed?
01 TALK
□ NO EVIDENCE YETNEWEST EVIDENCE NONE YETNo evidence yet.
SRC: NONE YET02 EXPOSED
□ NOT TRACKED YETNO SOURCE FOR THIS STEP YETWe have no source that counts exposed systems yet. Internet scan data needs a partnership we do not have. No evidence here does not mean nothing is exposed.
03 TRIED
■ CONFIRMEDNEWEST EVIDENCE · 2 INDEPENDENT SOURCESAttacks that worked are confirmed (step 4), so attempts count as confirmed too.
- SRC: CISA Known Exploited Vulnerabilities: MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability · SEP 9
- SRC: CISA Known Exploited Vulnerabilities: MikroTik RouterOS Missing Authentication for Critical Function Vulnerability · SEP 9
- SRC: CVE List V5 and CISA Vulnrichment: CISA Vulnrichment marks CVE-2026-86060 as actively exploited · SEP 5
- SRC: CVE List V5 and CISA Vulnrichment: CISA Vulnrichment marks CVE-2026-67277 as actively exploited · SEP 5
04 EXPLOITED
■ CONFIRMEDNEWEST EVIDENCE · 2 INDEPENDENT SOURCESMikroTik RouterOS contains an improper neutralization of argument delimiters in a command vulnerability which allows an attacker to change the trusted RouterOS policy mask, leading to privilege escalation. MikroTik RouterOS contains a missing authentication for critical function vulnerability which allows kernel memory disclosure and denial of service in the btest service.
- SRC: CISA Known Exploited Vulnerabilities: MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability · SEP 9
- SRC: CISA Known Exploited Vulnerabilities: MikroTik RouterOS Missing Authentication for Critical Function Vulnerability · SEP 9
- SRC: CVE List V5 and CISA Vulnrichment: CISA Vulnrichment marks CVE-2026-86060 as actively exploited · SEP 5
- SRC: CVE List V5 and CISA Vulnrichment: CISA Vulnrichment marks CVE-2026-67277 as actively exploited · SEP 5
05 DAMAGE
□ NOT TRACKED YETNO SOURCE FOR THIS STEP YETBreach notices and filings rarely name the flaw that was used, so we cannot link them to this event yet. No evidence here does not mean no harm.
When each thing happened
- DISCLOSED
- EXPLOIT CODE PUBLIC
- FIRST ATTACK REPORT
- CISA KEV LISTING
- US FEDERAL DEADLINE
THE FIX
CISA's instruction: apply the vendor's fix, or stop using the product if no fix exists. The deadline CISA set for US federal agencies, Sep 13, 2026, has passed. It is a US government deadline; use it as a guide.
Questions to ask this week
- Do we run MikroTik RouterOS? If yes, is it patched or cut off from the internet?
- Who owns fixing it, and by what date?
- Have we checked for signs of attack since the first report, not just since the patch?
How it unfolded
- Attack activity. SEP 5, 2026CISA Vulnrichment marks CVE-2026-67277 as actively exploited
- Attack activity. SEP 5, 2026CISA Vulnrichment marks CVE-2026-86060 as actively exploited
- Attack activity. SEP 9, 2026MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability
- Attack activity. SEP 9, 2026MikroTik RouterOS Missing Authentication for Critical Function Vulnerability
- SEP 9, 20263 public GitHub repositories claim a proof of concept for CVE-2026-86060
- SEP 23, 2026Exploit-DB entry: MikroTrick_ 7.24_ 7.24.2_ 7.0.0_ 7.23.4_ 6.0.0_ 6.49.21 - RCE
SOURCES
- [1] Exploit-DB: Exploit-DB entry: MikroTrick_ 7.24_ 7.24.2_ 7.0.0_ 7.23.4_ 6.0.0_ 6.49.21 - RCE, SEP 23
- [2] PoC-in-GitHub: 3 public GitHub repositories claim a proof of concept for CVE-2026-86060, SEP 9
- [3] CISA Known Exploited Vulnerabilities: MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability, SEP 9
- [4] CISA Known Exploited Vulnerabilities: MikroTik RouterOS Missing Authentication for Critical Function Vulnerability, SEP 9
- [5] CVE List V5 and CISA Vulnrichment: CISA Vulnrichment marks CVE-2026-86060 as actively exploited, SEP 5
- [6] CVE List V5 and CISA Vulnrichment: CISA Vulnrichment marks CVE-2026-67277 as actively exploited, SEP 5