CVE-2025-60686 Memory corruption in n/a
Local attackers can trigger stack buffer overflows in ToToLink router binaries via /proc/net/arp, causing denial of service or arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-60686?
CVE-2025-60686 is a medium-severity memory corruption vulnerability in n/a, published on 13 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A local stack-based buffer overflow vulnerability exists in the infostat.cgi and cstecgi.cgi binaries of ToToLink routers (A720R V4.1.5cu.614_B20230630, LR1200GB V9.1.0u.6619_B20230130, and NR1800X V9.1.0u.6681_B20230703). Both programs parse the contents of /proc/net/arp using sscanf() with "%s" format specifiers into fixed-size stack buffers without length validation. Specifically, one function writes user-controlled data into a single-byte buffer, and the other into adjacent small arrays without bounds checking. An attacker who controls the contents of /proc/net/arp can trigger memory corruption, leading to denial of service or potential arbitrary code execution.
Weakness: CWE-121
Which versions are affected by CVE-2025-60686?
It affects 3 products.
Products include Totolink A720r Firmware, Totolink Lr1200gb Firmware, Totolink Nr1800x Firmware.
How do I fix CVE-2025-60686?
No fix has been published for CVE-2025-60686 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-2025-60686 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-60686 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-5mqq-26vj-265q.