CVE-2025-10948 MikroTik RouterOS libjson.so print parse_json_element buffer overflow
Remote attackers can trigger a buffer overflow in RouterOS JSON parsing, potentially leading to code execution or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-10948?
CVE-2025-10948 is a high-severity memory corruption vulnerability in MikroTik RouterOS, published on 25 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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."
Which versions are affected by CVE-2025-10948?
How do I fix CVE-2025-10948?
No fix has been published for CVE-2025-10948 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-10948 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-10948 exists.
Sources
Also known as GHSA-xfr2-wmjg-pmwj.