High severity · published Sep 25, 2025
CVE-2025-10948
MikroTik RouterOS libjson.so print parse_json_element buffer overflow
8.8
CVSS
1%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RO
RouterOS · MikroTik
7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-10948
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-10948
github.com
https://github.com/a2ure123/libjson-unicode-buffer-overflow-poc
github.com
https://github.com/a2ure123/libjson-unicode-buffer-overflow-poc#technical-proof-of-concept
vuldb.com
https://vuldb.com/?ctiid.325818
vuldb.com
https://vuldb.com/?id.325818
vuldb.com
https://vuldb.com/?submit.652387
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