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High VDE-2021-006 1 CVE

Pepperl+Fuchs: Multiple Products - Vulnerability may allow remote attackers to cause a Denial Of Service

Published Nov 16, 2021 · Updated May 14, 2025 · Revision 3

Vendor: Pepperl+Fuchs Product: <=V2.0.0 Product: <=V2.1.1 Product: <=V3.1.5 Product: <=V4.2.0 Product: CS3B-LS610-OM Product: OHV-F230-B17 Product: OIT500-F113-B17-CB Product: PCV100-F200-B17-V1D Product: PCV100-F200-B17-V1D-6011 Product: PCV100-F200-B17-V1D-6011-6997 Product: PCV100-F200-B17-V1D-6011-8203 Product: PCV50-F200-B17-V1D Product: PCV80-F200-B17-V1D Product: PGV100-F200-B17-V1D-7477 Product: PGV100-F200A-B17-V1D Product: PGV100A-F200-B28-V1D Product: PGV100A-F200A-B28-V1D Product: PGV100AQ-F200-B28-V1D Product: PGV100AQ-F200A-B28-V1D Product: PGV150I-F200A-B17-V1D Product: PHA150-F200-B17-V1D Product: PHA150-F200A-B17-V1D Product: PHA200-F200-B17-V1D Product: PHA200-F200A-B17-T-V1D Product: PHA200-F200A-B17-V1D Product: PHA300-F200-B17-T-V1D Product: PHA300-F200-B17-V1D Product: PHA300-F200A-B17-T-V1D Product: PHA300-F200A-B17-V1D +23 more

Summary

Critical vulnerability has been discovered in the utilized component PROFINET IO Device by Hilscher Gesellschaft für Systemautomation mbH.

The impact of the vulnerability on the affected device is that it can
- no longer perform acyclic requests
- may drop all established cyclic connections may
- disappear completely from the network.

For more information see advisory by Hilscher:

https://kb.hilscher.com/display/ISMS/2020-12-03+Denial+of+Service+vulnerability+in+PROFINET+IO+Device

Update 20.11.2024: Products have been added

Details

Impact
Pepperl+Fuchs analyzed and identified affected devices.
Remote attackers may cause a cause a Denial Of Service of the product.

Mitigation
An external protective measure is required.

- Minimize network exposure for affected products and ensure that they are not accessible via the Internet.
- Isolate affected products from the corporate network.
- If remote access is required, use secure methods such as virtual private networks (VPNs).

Vulnerabilities 1

  • High 7.5
    CVE-2021-20986

    Hilscher: Denial of Service vulnerability in PROFINET IO Device

    A Denial of Service vulnerability was found in Hilscher PROFINET IO Device V3 in versions prior to V3.14.0.7. This may lead to unexpected loss of cyclic communication or interruption of acyclic communication.

    Pepper+Fuchs Hilscher WCS PCV/PXV/PGV

Revision history

  1. #3

    Fix: added distribution

  2. #2

    Products have been added

  3. #1

    Initial revision.

References