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 car…
Vulnerability class: Buffer Overflow
EPSS: 0.002 (45.5th 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/E:P/RL:O/RC:C.
Affected products
- Mikrotik Routeros — versions 7, 7.20.1, 7.21beta2
Weakness classification (CWE)
References
- VDB-325818 | MikroTik RouterOS libjson.so print parse_json_element buffer overflow (vdb-entry, technical-description)
- VDB-325818 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #652387 | MikroTik RouterOS 7 Memory Corruption (third-party-advisory)
- github.com/a2ure123/libjson-unicode-buffer-overflow-poc (exploit)
- github.com/a2ure123/libjson-unicode-buffer-overflow-poc (exploit)
Frequently asked questions
- What is CVE-2025-10948?
- CVE-2025-10948 is a high-severity vulnerability in Mikrotik Routeros, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). 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.