Out-of-Bounds Read Vulnerability in MikroTik RouterOS
CVE-2026-7668

6.9MEDIUM

Key Information:

Vendor

Mikrotik

Status
Routeros
Vendor
CVE Published:
2 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7668?

An out-of-bounds read vulnerability has been identified in MikroTik RouterOS version 6.49.8, specifically within the ASN1_STRING_data function found in the library nova/lib/www/scep.p, which is part of the SCEP Endpoint component. This flaw arises from improper handling of the transactionID and messageType arguments, allowing an attacker to initiate an exploit remotely. The vulnerability is known to be publicly exploitable, and there has been a lack of response from the vendor regarding this security issue following early disclosure attempts.

Affected Version(s)

RouterOS 6.49.8

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7668 - Proof of Concept

References

https://vuldb.com/vuln/360804
vdb-entrytechnical-description
https://vuldb.com/vuln/360804/cti
signaturepermissions-required
https://vuldb.com/submit/798623
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

VulDB CNA Team
.