SARA / Free Tools / CVE / CVE-2023-46143

CVE-2023-46143 — Download of Code Without Integrity Check vulnerability in PHOENIX CONTACT classi

Download of Code Without Integrity Check vulnerability in PHOENIX CONTACT classic line PLCs allows an unauthenticated remote attacker to modify some or all applications on a PLC.

CVSS

7.5 HIGH

EPSS

0.24% (top 52.60%)

CWE

CWE-494

Published

2023-12-14T14:06:06.479Z

Last modified

2025-05-22T17:39:45.716Z

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

01What is this vulnerability?

Download of Code Without Integrity Check vulnerability in PHOENIX CONTACT classic line PLCs allows an unauthenticated remote attacker to modify some or all applications on a PLC.

02Affected products

Vendor	Product	Versions
PHOENIX CONTACT	Automation Worx Software Suite	all
PHOENIX CONTACT	AXC 1050	all
PHOENIX CONTACT	AXC 1050 XC	all
PHOENIX CONTACT	AXC 3050	all
PHOENIX CONTACT	Config+	all
PHOENIX CONTACT	FC 350 PCI ETH	all
PHOENIX CONTACT	ILC1x0	all
PHOENIX CONTACT	ILC1x1	all
PHOENIX CONTACT	ILC 3xx	all
PHOENIX CONTACT	PC Worx	all
PHOENIX CONTACT	PC Worx Express	all
PHOENIX CONTACT	PC WORX RT BASIC	all
PHOENIX CONTACT	PC WORX SRT	all
PHOENIX CONTACT	RFC 430 ETH	IB — all
PHOENIX CONTACT	RFC 450 ETH	IB — all
PHOENIX CONTACT	RFC 460R PN 3TX	all
PHOENIX CONTACT	RFC 470S PN 3TX	all
PHOENIX CONTACT	RFC 480S PN 4TX	all

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: 2023-12-14T14:06:06.479Z
Last modified: 2025-05-22T17:39:45.716Z

09References

cert.vde.com — https://cert.vde.com/en/advisories/VDE-2023-057/

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