Phoenix Contact: PC Worx/-Express prone to improper input validation vulnerability
Priority LOW 35CWE-20Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00654 51st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Phoenix Contact | PC Worx | PC Worx – 1.88; PC Worx-Express – 1.88 | — | No fix listed | CNA |
- PC Worx VendorPhoenix Contact Affected PC Worx – 1.88; PC Worx-Express – 1.88 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:phoenixcontact:pc_worx:*:*:*:*:*:*:*:* | up to 1.88 | Vulnerable | Phoenixcontact |
| cpe:2.3:a:phoenixcontact:pc_worx_express:*:*:*:*:*:*:*:* | up to 1.88 | Vulnerable | Phoenixcontact |
- cpe:2.3:a:phoenixcontact:pc_worx:*:*:*:*:*:*:*:* Versions up to 1.88 Vulnerable ·Phoenixcontact
- cpe:2.3:a:phoenixcontact:pc_worx_express:*:*:*:*:*:*:*:* Versions up to 1.88 Vulnerable ·Phoenixcontact
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-34597
- 2026-10-03 Alias added: GHSA-m8p2-4fmh-2gr9
- 2026-10-14 EPSS moved to the 50th–90th percentile
References
More Phoenix Contact vulnerabilities
- TI-2014-07463 Phoenix Contact Software ProConOs and MultiProg Missing Authentication for Critical Function CVSS 2.0CRITICAL 10.0
- TI-2024-17093 PHOENIX CONTACT: Remote code execution in CHARX Series CVSS 3.1CRITICAL 9.8
- TI-2022-13692 Insufficient Verification of Data Vulnerability in PHOENIX CONTACT classic line industrial controllers CVSS 3.1CRITICAL 9.8
- TI-2026-21959 Remote code execution via uploading a malicious IODD file CVSS 3.1CRITICAL 9.8
- TI-2026-21940 Authentication Bypass in _account_log CVSS 3.1CRITICAL 9.8
- TI-2023-03334 PHOENIX CONTACT: OS Command Injection in WP 6xxx Web panels CVSS 3.1CRITICAL 10.0
Sources
- CVE-2021-34597 · CVE Program
- CVE-2021-34597 · NVD
- FIRST EPSS
- GHSA-m8p2-4fmh-2gr9 · GitHub Advisory Database · CC BY 4.0
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