CVE-2026-76860 Netcore NR255-V 1.5.130703 Stack-Based Buffer Overflow in wake_up_set.cgi via MAC and ID Tokenization
Attackers can trigger a stack-based buffer overflow in the wake_up_set.cgi endpoint via crafted MAC and ID inputs, potentially leading to code execution or denial of service.
- 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-2026-76860?
CVE-2026-76860 is a high-severity memory corruption vulnerability in Netcore NR255-V, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Netcore NR255-V version 1.5.130703 contains a stack-based buffer overflow in wake_up_set.cgi caused by unbounded tokenization of MAC and ID input. Attackers can supply crafted MAC and ID values to the affected endpoint to overflow the stack buffer and corrupt program memory.
Weakness: CWE-121
Which versions are affected by CVE-2026-76860?
How do I fix CVE-2026-76860?
No fix has been published for CVE-2026-76860 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-2026-76860 being exploited?
There is no known exploitation of CVE-2026-76860 in the wild and no public exploit code.
Sources
Also known as GHSA-rv5x-73pq-5q9f.