Is CVE-2026-7668 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-7668 being exploited in the wild.

How severe is CVE-2026-7668?

High severity, with a CVSS score of 7.3, published 2 May 2026.

Is there a fix for CVE-2026-7668?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-7668 attacked?

It is attacked over the network, in an operating system.

Am I affected by CVE-2026-7668?

Check whether you run MikroTik RouterOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-7668: MikroTik RouterOS out-of-bounds read in SCEP Endpoint

CVE-2026-7668 · Severity: high · CVSS 7.3 · Published 2026-05-02

A security vulnerability exists in MikroTik RouterOS, the operating system used in MikroTik networking hardware like routers and switches. An attacker can exploit a flaw in the Simple Certificate Enrollment Protocol (SCEP) service to access sensitive information from the device's memory without needing to log in. This could lead to the disclosure of private data or cause the device to behave unpredictably, potentially impacting network security and operations.

Technologies: MikroTik RouterOS. Vendors: MikroTik.

Quick answers

Is CVE-2026-7668 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-7668 being exploited in the wild.
How severe is CVE-2026-7668?: High severity, with a CVSS score of 7.3, published 2 May 2026.
Which products and versions are affected?: MikroTik RouterOS 6.49.8.
Is there a fix for CVE-2026-7668?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-7668 attacked?: It is attacked over the network, in an operating system.
Am I affected by CVE-2026-7668?: Check whether you run MikroTik RouterOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An out-of-bounds read vulnerability (CWE-125) exists in the SCEP Endpoint component of MikroTik RouterOS, specifically within the nova/lib/www/scep.p library. The flaw is caused by the improper handling of ASN.1 length information when parsing PKCS#7 signed attributes such as transactionID and messageType. The function ASN1_STRING_data() returns raw pointers that are subsequently treated as NUL-terminated C-strings without verifying the original ASN.1 attribute boundaries. A remote, unauthenticated attacker can trigger this by sending a crafted PKIOperation request containing a non-NUL-terminated ASN.1 PrintableString. This results in the disclosure of memory contents in certRep replies. The vendor recommends upgrading to the latest v6.x or 7.x versions where the issue is addressed.

Affected products

MikroTik RouterOS 6.49.8

Timeline

2026-04-04: disclosed: Initial disclosure on GitHub by researcher
2026-05-02: advisory: NVD/VulDB publication date

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.