MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability

MikroTik RouterOS

MikroTik 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. Can be chained with CVE-2026-67277. Added to CISA KEV on 2026-09-10 (federal deadline 2026-09-13).

First seen: 10 Sept 2026
Last update: 10 Sept 2026, 12:00 UTC
Identifiers: CVE-2026-67277
CVE-2026-86060
Source: CISA KEV
On the menu as: VPN & firewalls

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: MikroTik RouterOS
Ids: CVE-2026-67277, CVE-2026-86060

MikroTik 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. Can be chained with CVE-2026-67277. Added to CISA KEV on 2026-09-10 (federal deadline 2026-09-13).

## Steps
1. This touches infrastructure (vpn-edge). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-67277") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://mikrotik.com/supportsec/september-2026-vulnerability https://mikrotik.com/supportsec/september-2026-vulnerability/ https://nvd.nist.gov/vuln/detail/CVE-2026-67277 https://nvd.nist.gov/vuln/detail/CVE-2026-86060
https://pwned.coffee/i/mikrotik-routeros-improper-neutralization-of-argument-delimiters-in-a-co

Sources

Totalone hot coffee