What is CVE-2026-7668?

CVE-2026-7668 is a high-severity vulnerability in Mikrotik Routeros, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.3/10. Published 2026-05-02.

How severe is CVE-2026-7668?

High severity. CVSS v3 base score is 7.3 out of 10.

Buffer overflow in Mikrotik Routeros

CVE-2026-7668

A vulnerability was identified in MikroTik RouterOS 6.49.8. This vulnerability affects the function ASN1_STRING_data in the library nova/lib/www/scep.p of the component SCEP Endpoint. The manipulation of the argument transactionID/messageT…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (17.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Mikrotik Routeros — versions 6.49.8

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (issue-tracking, exploit)

Frequently asked questions

What is CVE-2026-7668?: CVE-2026-7668 is a high-severity vulnerability in Mikrotik Routeros, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.3/10. Published 2026-05-02.
How severe is CVE-2026-7668?: High severity. CVSS v3 base score is 7.3 out of 10.