High 8.8Published Sep 25, 2025

CVE-2025-10948MikroTik RouterOS libjson.so print parse_json_element buffer overflow

Updated under an hour ago (Oct 27, 2026, 8:25 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for MikroTik RouterOS

Exploited in the last 30 days

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."

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Weakness (CWE): CWE-120, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Oct 13, 2025
First seen by InfoSec Signals: Oct 11, 2026

Affected products

Affected products

MikroTik RouterOS mikrotik:routeros (from the name)	7; 7.20.1 not affected; 7.21beta2 not affected	CNA record

References

References

https://vuldb.com/?id.325818	vdb-entry, technical-description
https://vuldb.com/?ctiid.325818	signature, permissions-required
https://vuldb.com/?submit.652387	third-party-advisory
https://github.com/a2ure123/libjson-unicode-buffer-overflow-poc	exploit
https://github.com/a2ure123/libjson-unicode-buffer-overflow-poc#technical-proof-of-concept	exploit

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.