CVE-2020-12497

Phoenix Contact Automation Worx <= 1.87: stack-based overflow

HIGH
7.8
CVSS Score
Published: July 1, 2020 at 03:52 PM UTC
Updated: June 17, 2026 at 02:51 AM UTC
3 products affected across 1 vendorPC WorxPC Worx ExpressAutomationworx Software Suite

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Severity
HIGH7.8
Exploit prediction
EPSS 15%

Description

PLCopen XML file parsing in Phoenix Contact PC Worx and PC Worx Express version 1.87 and earlier can lead to a stack-based overflow. Manipulated PC Worx projects could lead to a remote code execution due to insufficient input data validation.

Affected

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

v < 1.87
Affected range stops below 1.87, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

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

References (3)

x_refsource_MISCThird Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-825/
x_refsource_MISCThird Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-21-398/

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-121CWE-787

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