CVE-2023-46142 — A incorrect permission assignment for critical resource vulnerability in PLCnext

A incorrect permission assignment for critical resource vulnerability in PLCnext products allows an remote attacker with low privileges to gain full access on the affected devices.

01What is this vulnerability?

A incorrect permission assignment for critical resource vulnerability in PLCnext products allows an remote attacker with low privileges to gain full access on the affected devices.

02Affected products

Vendor	Product	Versions
PHOENIX CONTACT	AXC F 1152	0
PHOENIX CONTACT	AXC F 2152	0
PHOENIX CONTACT	AXC F 3152	0
PHOENIX CONTACT	BPC 9102S	0
PHOENIX CONTACT	EPC 1502	0
PHOENIX CONTACT	EPC 1522	0
PHOENIX CONTACT	PLCnext Engineer	0
PHOENIX CONTACT	RFC 4072R	0
PHOENIX CONTACT	RFC 4072S	0

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: 2023-12-14T14:05:35.741Z
• Last modified: 2024-08-02T20:37:39.840Z

09References

• https: — https://https://cert.vde.com/en/advisories/VDE-2023-056/