CVE-2023-46143 | Phoenix Contact: Classic line industrial controllers prone to inadequate integrity check of PLC

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.

Published: 2023-12-14 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-46143 is rated Low Risk (38.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.33%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-46143

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.24% 0.33% +0.09%
2 2025-11-21 0.06% 0.24% +0.19%
3 2025-11-18 — 0.06% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-46143

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2023-46143

Affected software / configurations for CVE-2023-46143

Vendor Product Version Raw CPE
phoenixcontact automationworx_software_suite — cpe:2.3:a:phoenixcontact:automationworx_software_suite:*:*:*:*:*:*:*:*
phoenixcontact axc_1050_firmware — cpe:2.3:o:phoenixcontact:axc_1050_firmware:*:*:*:*:*:*:*:*
phoenixcontact axc_1050_xc_firmware — cpe:2.3:o:phoenixcontact:axc_1050_xc_firmware:*:*:*:*:*:*:*:*
phoenixcontact axc_3050_firmware — cpe:2.3:o:phoenixcontact:axc_3050_firmware:*:*:*:*:*:*:*:*
phoenixcontact config\+ — cpe:2.3:a:phoenixcontact:config\+:*:*:*:*:*:*:*:*
phoenixcontact fc_350_pci_eth_firmware — cpe:2.3:o:phoenixcontact:fc_350_pci_eth_firmware:*:*:*:*:*:*:*:*
phoenixcontact ilc1x0_firmware — cpe:2.3:o:phoenixcontact:ilc1x0_firmware:*:*:*:*:*:*:*:*
phoenixcontact ilc1x1_firmware — cpe:2.3:o:phoenixcontact:ilc1x1_firmware:*:*:*:*:*:*:*:*
phoenixcontact ilc_3xx_firmware — cpe:2.3:o:phoenixcontact:ilc_3xx_firmware:*:*:*:*:*:*:*:*
phoenixcontact pc_worx — cpe:2.3:a:phoenixcontact:pc_worx:*:*:*:*:*:*:*:*
phoenixcontact pc_worx_express — cpe:2.3:a:phoenixcontact:pc_worx_express:*:*:*:*:*:*:*:*
phoenixcontact pc_worx_rt_basic_firmware — cpe:2.3:o:phoenixcontact:pc_worx_rt_basic_firmware:*:*:*:*:*:*:*:*
phoenixcontact pc_worx_srt — cpe:2.3:a:phoenixcontact:pc_worx_srt:*:*:*:*:*:*:*:*
phoenixcontact rfc_430_eth-ib_firmware — cpe:2.3:o:phoenixcontact:rfc_430_eth-ib_firmware:*:*:*:*:*:*:*:*
phoenixcontact rfc_450_eth-ib_firmware — cpe:2.3:o:phoenixcontact:rfc_450_eth-ib_firmware:*:*:*:*:*:*:*:*
phoenixcontact rfc_460r_pn_3tx_firmware — cpe:2.3:o:phoenixcontact:rfc_460r_pn_3tx_firmware:*:*:*:*:*:*:*:*
phoenixcontact rfc_470s_pn_3tx_firmware — cpe:2.3:o:phoenixcontact:rfc_470s_pn_3tx_firmware:*:*:*:*:*:*:*:*
phoenixcontact rfc_480s_pn_4tx_firmware — cpe:2.3:o:phoenixcontact:rfc_480s_pn_4tx_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-46143

URL Tags
https://cert.vde.com/en/advisories/VDE-2023-057/ Third Party Advisory
cvelogic Threat Intelligence