CVE-2026-96891 D-Link DIR-825 rp-l2tp tunnel.c tunnel_set_params out-of-bounds write
Remote attackers can trigger an out-of-bounds write in the rp-l2tp component of D-Link DIR-825 routers, potentially leading to arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-96891?
CVE-2026-96891 is a critical memory corruption vulnerability in D-Link DIR-825, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in D-Link DIR-825 3.00b32. Affected is the function tunnel_set_params of the file tunnel.c of the component rp-l2tp. The manipulation of the argument peer_hostname leads to out-of-bounds write. The attack may be initiated remotely.
Which versions are affected by CVE-2026-96891?
How do I fix CVE-2026-96891?
No fix has been published for CVE-2026-96891 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-2026-96891 being exploited?
There is no known exploitation of CVE-2026-96891 in the wild and no public exploit code.
Sources
Also known as GHSA-3hcq-2p28-7753.