CVE-2025-9526 Linksys E1700 setSysAdm stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the Linksys E1700 router via the setSysAdm function, potentially executing arbitrary code.
- 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-2025-9526?
CVE-2025-9526 is a high-severity memory corruption vulnerability in Linksys E1700, published on 27 Aug 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 Linksys E1700 1.0.0.4.003. Affected by this issue is the function setSysAdm of the file /goform/setSysAdm. Such manipulation of the argument rm_port leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-9526?
It affects 1 product.
Products include Linksys E1700 Firmware.
How do I fix CVE-2025-9526?
No fix has been published for CVE-2025-9526 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-2025-9526 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9526 exists.
Other vulnerabilities in Linksys E1700
Sources
Also known as GHSA-226f-28jj-g35j.