Pc Worx
CVE-2021-34597
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
|
| Impact | CVSS score of 7.8 (HIGH). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required. |
| Exploit ScenarioDerived | Successful exploitation could compromise the high-severity affected system. |
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Alert meAnalysisAI
Improper Input Validation vulnerability in PC Worx Automation Suite of Phoenix Contact up to version 1.88 could allow an attacker with a manipulated project file to unpack arbitrary files outside of. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
This vulnerability is classified under CWE-20. Improper Input Validation vulnerability in PC Worx Automation Suite of Phoenix Contact up to version 1.88 could allow an attacker with a manipulated project file to unpack arbitrary files outside of the selected project directory. Affected products include: Phoenixcontact Pc Worx, Phoenixcontact Pc Worx Express. Version information: version 1.88.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from Vendor (cert) · only source for this CVE.
CVSS VectorVendor: cert
DescriptionCVE.org
Improper Input Validation vulnerability in PC Worx Automation Suite of Phoenix Contact up to version 1.88 could allow an attacker with a manipulated project file to unpack arbitrary files outside of the selected project directory.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)CVE.org
Incorrect Permission Assignment for Critical Resource vulnerability in multiple products of the PHOENIX CONTACT classic
mwe file parsing in Phoenix Contact PC Worx and PC Worx Express version 1.87 and earlier is vulnerable to out-of-bounds
PLCopen XML file parsing in Phoenix Contact PC Worx and PC Worx Express version 1.87 and earlier can lead to a stack-bas
An issue was discovered in PHOENIX CONTACT PC Worx through 1.86, PC Worx Express through 1.86, and Config+ through 1.86.
Download of Code Without Integrity Check vulnerability in PHOENIX CONTACT classic line PLCs allows an unauthenticated re
Phoenix Contact Classic Automation Worx Software Suite in Version 1.87 and below is affected by a remote code execution
GitHub PoC
Exploit-DB