CVE-2026-0393 CODESYS Visualization - Insufficiently Protected Credentials
Attackers can expose credentials of low-privileged users during concurrent logins in CODESYS Visualization sessions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-0393?
CVE-2026-0393 is a medium-severity vulnerability in CODESYS Visualization, published on 21 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The affected product may expose credentials remotely between low privileged visualization users during concurrent login operations due to insufficient isolation of authentication data. The vulnerability affects only login operations within an active visualization session.
Weakness: CWE-522
Which versions are affected by CVE-2026-0393?
It affects 1 product.
Products include Codesys Visualization.
How do I fix CVE-2026-0393?
No fix has been published for CVE-2026-0393 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-0393 being exploited?
There is no known exploitation of CVE-2026-0393 in the wild and no public exploit code.
Other vulnerabilities in CODESYS Visualization
Sources
Also known as GHSA-ch6f-rrj9-8j2m.