CVE-2018-21135 Memory corruption in n/a
An authenticated attacker can trigger a stack-based buffer overflow in NETGEAR routers, potentially leading to arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-21135?
CVE-2018-21135 is a medium-severity memory corruption vulnerability in Netgear R6700 Firmware, published on 23 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R6700 before 1.0.1.48, R7500 before 1.0.0.124, R7800 before 1.0.2.58, R8900 before 1.0.4.2, R9000 before 1.0.4.2, WNDR3700v4 before 1.0.2.102, WNDR4300v1 before 1.0.2.104, WNDR4300v2 before 1.0.0.56, WNDR4500v3 before 1.0.0.56, and WNR2000v5-R2000 before 1.0.0.68.
Weakness: CWE-787
Which versions are affected by CVE-2018-21135?
It affects 9 products.
Products include Netgear R6700 Firmware, Netgear R7500 Firmware, Netgear R7800 Firmware, Netgear R8900 Firmware, Netgear R9000 Firmware, Netgear Wndr3700 Firmware and 3 more.
How do I fix CVE-2018-21135?
No fix has been published for CVE-2018-21135 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-2018-21135 being exploited?
There is no known exploitation of CVE-2018-21135 in the wild and no public exploit code.
Other vulnerabilities in Netgear R6700 Firmware
Sources
Also known as GHSA-6rg5-hf9j-26mf.