High severity7.5NVD Advisory· Published Feb 16, 2021· Updated Jun 17, 2026

CVE-2021-20986

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Hilscher/PROFINET IO Device V3llm-fuzzy
Range: <V3.14.0.7
Pepper+fuchs/Oitv5
Range: OIT500-F113-B17-CB
Pepper+fuchs/Ohvv5
Range: OHV-F230-B17

Patches

Vulnerability mechanics

References

cert.vde.com/en-us/advisories/vde-2021-006nvdThird Party Advisory
kb.hilscher.com/display/ISMS/2020-12-03+Denial+of+Service+vulnerability+in+PROFINET+IO+DevicenvdVendor Advisory

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