CVE-2021-41987

HIGH
Published Mar 16, 20224y ago · Modified Jun 17, 20262w ago
8.1 CVSS 3.1
High
Find Similar
Published Mar 16, 2022 4y ago
Last Modified Jun 17, 2026 2w ago

Description

In the SCEP Server of RouterOS in certain Mikrotik products, an attacker can trigger a heap-based buffer overflow that leads to remote code execution. The attacker must know the scep_server_name value. This affects RouterOS 6.46.8, 6.47.9, and 6.47.10.

CVSS Details

Base Score
8.1
Exploitability
2.2
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 3

VendorProductVersionRange
mikrotikrouteros6.46.8any
mikrotikrouteros6.47.9any
mikrotikrouteros6.47.10any

References 2

  • mikrotik.com https://mikrotik.com/download/archive
    Release NotesVendor Advisory
  • teamt5.org https://teamt5.org/en/posts/vulnerability-mikrotik-cve-2021-41987/
    ExploitThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.