CVE-2022-31806 — In CODESYS V2 PLCWinNT and Runtime Toolkit 32 in versions prior to V2

In CODESYS V2 PLCWinNT and Runtime Toolkit 32 in versions prior to V2.4.7.57 password protection is not enabled by default and there is no information or prompt to enable password protection at login in case no password is set at the controller.

01What is this vulnerability?

In CODESYS V2 PLCWinNT and Runtime Toolkit 32 in versions prior to V2.4.7.57 password protection is not enabled by default and there is no information or prompt to enable password protection at login in case no password is set at the controller.

02Affected products

Vendor	Product	Versions
CODESYS	CODESYS PLCWinNT	V2
CODESYS	CODESYS Runtime Toolkit 32 bit full	V2

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-06-24T07:46:17.024Z
• Last modified: 2024-09-17T03:27:59.221Z

09References

• customers.codesys.com — https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=17140&token=6aa2c5c4a…