CVE-2021-42027 Security feature bypass in SINUMERIK Edge
An attacker can spoof a trusted entity by interfering in the communication path due to improper TLS certificate validation in SINUMERIK Edge.
- 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-2021-42027?
CVE-2021-42027 is a high-severity vulnerability in Siemens SINUMERIK Edge, published on 14 Dec 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 Edge (All versions < V3.2). The affected software does not properly validate the server certificate when initiating a TLS connection. This could allow an attacker to spoof a trusted entity by interfering in the communication path between the client and the intended server.
Weakness: CWE-295
Which versions are affected by CVE-2021-42027?
It affects 1 product.
Products include Siemens Sinumerik Edge.
How do I fix CVE-2021-42027?
No fix has been published for CVE-2021-42027 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-42027 being exploited?
There is no known exploitation of CVE-2021-42027 in the wild and no public exploit code.
Sources
Also known as GHSA-qf34-j4vq-q329.