CVE-2021-34597

Phoenix Contact: PC Worx/-Express prone to improper input validation vulnerability

HIGH

7.8

CVSS Score

Published: November 4, 2021 at 09:50 AM UTC

Updated: June 17, 2026 at 03:56 AM UTC

2 products affected across 1 vendorPC WorxPC Worx Express

Using PC Worx by Phoenix Contact?

Get instant alerts when new vulnerabilities affect PC Worx - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH7.8

Exploit prediction

EPSS 0.7%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PC Worx · Phoenix Contact

95%

v ≤ 1.88PC Worx ≤ v ≤ 1.88PC Worx-Express ≤ v ≤ 1.88PC Worx-Express

PC Worx Express · Phoenix Contact

95%

v ≤ 1.88

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://cert.vde.com/en/advisories/VDE-2021-052/

References (1)

x_refsource_CONFIRMMitigationThird Party Advisory

Source: [email protected]

https://cert.vde.com/en/advisories/VDE-2021-052/

CVSS

7.8HIGHCERTVDE

Attack Vector: LOCAL
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-20

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card