CVE-2021-40872 Auth bypass in n/a
Remote attackers can bypass authentication to log in as anonymous users or cause denial of service via crafted messages to the OPC/UA server.
- 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-2021-40872?
CVE-2021-40872 is a high-severity authentication bypass vulnerability in n/a, published on 10 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Softing Industrial Automation uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) or login as an anonymous user (bypassing security checks) by sending crafted messages to a OPC/UA server. The server process may crash unexpectedly because of an invalid type cast, and must be restarted.
Weakness: CWE-843
Which versions are affected by CVE-2021-40872?
It affects 2 products.
Products include Softing Smartlink Hw-Dp, Softing Uatoolkit Embedded.
How do I fix CVE-2021-40872?
No fix has been published for CVE-2021-40872 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-40872 being exploited?
There is no known exploitation of CVE-2021-40872 in the wild and no public exploit code.
Sources
Also known as GHSA-hp52-5qr2-jq2v.