CVE-2021-37199 Memory corruption in SINUMERIK 808D
An attacker can cause a denial-of-service on Siemens SINUMERIK CNC controllers by sending crafted packets to port 102/tcp.
- 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-2021-37199?
CVE-2021-37199 is a high-severity memory corruption vulnerability in Siemens SINUMERIK 808D, published on 12 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in SINUMERIK 808D (All versions), SINUMERIK 828D (All versions < V4.95). Affected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a denial-of-service in the device.
Which versions are affected by CVE-2021-37199?
It affects 2 products.
Products include Siemens Sinumerik 808d Firmware, Siemens Sinumerik 828d Firmware.
How do I fix CVE-2021-37199?
No fix has been published for CVE-2021-37199 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-2021-37199 being exploited?
There is no known exploitation of CVE-2021-37199 in the wild and no public exploit code.
Sources
Also known as GHSA-q6gp-rmpv-2ghj.