MikroTik RouterOS version 6.47.10 is known to be vulnerable to a specific remote code execution exploit involving the SCEP (Simple Certificate Enrollment Protocol) server. Key Exploit Details: CVE-2021-41987
This vulnerability allows an attacker to trigger a heap-based buffer overflow, potentially leading to remote code execution (RCE). Target: The SCEP Server process in RouterOS.
Pre-requisite: An attacker must know the scep_server_name value to successfully trigger the overflow.
Attack Vector: This is typically only exploitable if you have both exposed HTTP and enabled SCEP (/certificate scep-server add...) to the internet.
Probability: Experts note the most likely result of an attack is a process crash rather than successful RCE, as it depends heavily on exact configuration and memory allocation. Notable "Features" & Related Security Context
While not direct exploits, certain RouterOS "features" and behaviors in this version range are frequently targeted or mentioned alongside vulnerabilities:
Device-Mode Feature: Introduced to set specific limitations (e.g., "home" vs. "enterprise"). While meant for security, some users expressed concern about MikroTik's disclosure of underlying vulnerabilities like FTP and SMB DoS vectors in this version. mikrotik 6.47.10 exploit
Protected Bootloader: A feature that can disable the physical reset button and etherboot, which hackers have used in some cases to "lock" owners out of their own devices after a compromise.
Legacy Issues: Version 6.47.10 predates the mandatory prompt for administrators to change the default blank "admin" password, a major vector for brute-force attacks. Recommendations
Upgrade: This version is considered vulnerable. You should upgrade to 6.49.10 or higher, or move to RouterOS v7.
Mitigation: If you cannot upgrade immediately, disable the SCEP server and the Winbox/Web interfaces from being accessible via the public internet. CVE-2021-41987 - General - MikroTik community forum
MikroTik RouterOS 6.47.10 (Long-term) is vulnerable to several security flaws, most notably CVE-2021-41987 , which allows for unauthenticated Remote Code Execution (RCE) through a heap-based buffer overflow in the SCEP Server. Key Vulnerabilities for 6.47.10 Remote Code Execution (CVE-2021-41987): Attackers can trigger a buffer overflow in the SCEP Server
by sending crafted payloads. To exploit this, the attacker must know the scep_server_name Privilege Escalation (CVE-2023-30799): Impacting versions through 6.48.6, this flaw allows an authenticated attacker MikroTik RouterOS version 6
with "admin" privileges to escalate to "super-admin" and gain root access to the underlying system. Denial of Service (DoS): CVE-2020-22844 & CVE-2020-22845: Unauthenticated users can crash the device via crafted Various Component Flaws: Multiple vulnerabilities in processes like
can cause system crashes if an authenticated user sends malformed packets. Recommended Mitigations CVE-2021-41987 Detail - NVD
MikroTik RouterOS , released in June 2021 as part of the "long-term" channel, is susceptible to several critical vulnerabilities. The most significant is CVE-2021-41987
, which allows for unauthenticated Remote Code Execution (RCE). MikroTik community forum Key Vulnerability: CVE-2021-41987 This critical flaw targets the SCEP (Simple Certificate Enrollment Protocol) Server within RouterOS. MikroTik community forum Vulnerability Type: Heap-based Buffer Overflow.
An attacker can trigger the overflow to execute arbitrary code remotely (RCE) without needing to authenticate first. Condition: The attacker must know the scep_server_name
value and the device must have the SCEP server enabled and exposed to the internet. Remote exploitation requires WinBox (port 8291) or Webfig
Patched in later versions; MikroTik users are urged to update to the latest stable or long-term releases. MikroTik community forum Other Potential Risks for 6.47.x
While 6.47.10 was a stable release, it remains vulnerable to exploits that target misconfigurations or older unpatched services: CVE-2018-14847 (WinBox):
Although originally patched in 2018, attackers still use this directory traversal vulnerability to steal administrator credentials from devices that were never updated or had their firewalls disabled. Authenticated Exploits:
Attackers with admin access (often gained through brute-forcing weak passwords) can escalate privileges to "super-admin" or cause Denial of Service (DoS) through memory corruption in processes like tr069-client CVE: Common Vulnerabilities and Exposures Recommended Security Actions If you are running version 6.47.10, the MikroTik Security Guide and community experts suggest these immediate steps: CVE-2021-41987 - General - MikroTik community forum
MikroTik 6.47.10 Exploit: Understanding the Vulnerability
In recent years, the cybersecurity landscape has seen numerous exploits targeting various devices and systems, including network equipment like routers and firewalls. One such exploit that has garnered attention is the MikroTik 6.47.10 exploit. This text aims to provide an overview of the vulnerability, its implications, and what it means for users and administrators of MikroTik devices.
RouterOS 6.47.10 had SMB sharing enabled by default in some configuration presets. A buffer overflow in the SMB service allowed remote code execution (RCE). An attacker only needed to send a malformed SMB negotiation request to crash the service and potentially gain a reverse shell.
If the version is so vulnerable, why is it still alive? Three reasons:
/interface bridge port vs /interface bridge).