CVE-2026-71957 D-Link DWR-M961 Buffer Overflow via app.cgi
Remote attackers can execute arbitrary commands or crash D-Link DWR-M961 routers via a buffer overflow in the app.cgi interface.
- 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-2026-71957?
CVE-2026-71957 is a critical memory corruption vulnerability in D-Link Corporation DWR-M961, published on 8 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a buffer overflow vulnerability in the app.cgi interface. A remote attacker can write an overly long string to the netAcc.addlist[].name field and execute arbitrary commands by crafting a specific payload, or cause the device to crash.
Weakness: CWE-120
Which versions are affected by CVE-2026-71957?
How do I fix CVE-2026-71957?
No fix has been published for CVE-2026-71957 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-2026-71957 being exploited?
There is no known exploitation of CVE-2026-71957 in the wild and no public exploit code.
Sources
Also known as GHSA-6hx4-fgxm-92r2.