What is CVE-2025-10948?

CVE-2025-10948 is a high-severity vulnerability in Mikrotik Routeros, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-09-25.

How severe is CVE-2025-10948?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Mikrotik Routeros

CVE-2025-10948

A vulnerability has been found in MikroTik RouterOS 7. This affects the function parse_json_element of the file /rest/ip/address/print of the component libjson.so. The manipulation leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 7.20.1 and 7.21beta2 mitigates this issue. You should upgrade the affected component. The vendor replied: "Our bug tracker reports that your issue has been fixed. This means that we plan to release a RouterOS update with this fix. Make sure to upgrade to the next release when it comes out."

Vulnerability class: Buffer Overflow

EPSS: 0.008 (53.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mikrotik Routeros — versions 7, 7.20.1, 7.21beta2

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 (exploit)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2025-10948?: CVE-2025-10948 is a high-severity vulnerability in Mikrotik Routeros, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-09-25.
How severe is CVE-2025-10948?: High severity. CVSS v3 base score is 8.8 out of 10.