CVE-2021-36763 Path traversal in n/a
An attacker can access unauthorized files or directories on the CODESYS V3 web server, leading to information disclosure.
- 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-2021-36763?
CVE-2021-36763 is a high-severity path traversal vulnerability in Codesys Control Runtime System Toolkit, published on 3 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.
Weakness: CWE-552
Which versions are affected by CVE-2021-36763?
It affects 7 products.
Products include Codesys Control, Codesys Control Rte, Codesys Control Runtime System Toolkit, Codesys Control Win Sl, Codesys Embedded Target Visu Toolkit, Codesys Hmi and 1 more.
How do I fix CVE-2021-36763?
No fix has been published for CVE-2021-36763 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-36763 being exploited?
There is no known exploitation of CVE-2021-36763 in the wild and no public exploit code.
Other vulnerabilities in Codesys Control Runtime System Toolkit
Sources
Also known as GHSA-w4jx-jw2g-xvqv.