CVE-2020-12497
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 14.7%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 14.67% probability · 97th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-121, CWE-787
- Affected
- phoenixcontact/pc worx · phoenixcontact/pc worx express
- Source
- info@cert.vde.com
EPSS 14.7% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://cert.vde.com/de-de/advisories/vde-2020-023Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-825/Third Party Advisory, VDB Entry
- https://www.zerodayinitiative.com/advisories/ZDI-21-398/Third Party Advisory, VDB Entry
- https://cert.vde.com/de-de/advisories/vde-2020-023Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-825/Third Party Advisory, VDB Entry
- https://www.zerodayinitiative.com/advisories/ZDI-21-398/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.