CVE-2021-20986
Hilscher: Denial of Service vulnerability in PROFINET IO Device
HIGH
7.5
CVSS Score
Published: February 16, 2021 at 04:35 PM UTC
Updated: June 17, 2026 at 03:34 AM UTC
80 products affected across 3 vendorsWcs FirmwarePXV100AQ F200-b28-v1d 6011 FirmwarePcv100-f200-b17-v1d Firmware
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Severity
HIGH7.5
Exploit prediction
EPSS 1%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 3.14.0.7, so it looks safe — our inference, not a vendor statement
Affected range stops below V3.14.0.7, so it looks safe — our inference, not a vendor statement
hilscher-profinet-io-device (same device)
v ≤ 3.2.3
pepperl-fuchs-pcv100-f200-b17-v1d-6011-6997 (same device)
v ≤ 3.2.5
pepperl-fuchs-pcv100-f200-b17-v1d-6011-8203 (same device)
v ≤ 3.2.5
pepperl-fuchs-pcv100-f200-b17-v1d-6011 (same device)
v ≤ 3.2.3
pepperl-fuchs-pcv100-f200-b17-v1d (same device)
v ≤ 3.2.3
pepperl-fuchs-pcv50-f200-b17-v1d (same device)
v ≤ 3.2.3
pepperl-fuchs-pcv80-f200-b17-v1d (same device)
v ≤ 2.0.0
pepperl-fuchs-pgv100-f200-b17-v1d-7477 (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://cert.vde.com/en-us/advisories/vde-2021-006x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://kb.hilscher.com/display/ISMS/2020-12-03+Denial+of+Service+vulnerability+in+PROFINET+IO+DeviceCVSS
7.5HIGHCERTVDE
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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