CVE-2021-20986
HIGHCVSS 7.5/10EPSS 1.00%
Last modified
CVE-2021-20986 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.00% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hilscher | Profinet Io Device Firmware | >= 3.0, < 3.14.0.7 |
| Pepperl-Fuchs | Pgv100-F200a-B17-V1d Firmware | <= 2.0.0 |
| Pepperl-Fuchs | Pgv150i-F200a-B17-V1d Firmware | <= 2.0.0 |
| Pepperl-Fuchs | Pgv100-F200-B17-V1d-7477 Firmware | <= 2.0.0 |
| Pepperl-Fuchs | Pxv100-F200-B17-V1d Firmware | <= 4.2.0 |
| Pepperl-Fuchs | Pxv100-F200-B17-V1d-3636 Firmware | <= 4.2.0 |
| Pepperl-Fuchs | Pcv80-F200-B17-V1d Firmware | <= 3.2.3 |
| Pepperl-Fuchs | Pcv100-F200-B17-V1d Firmware | <= 3.2.3 |
| Pepperl-Fuchs | Pcv50-F200-B17-V1d Firmware | <= 3.2.3 |
| Pepperl-Fuchs | Pcv100-F200-B17-V1d-6011-6997 Firmware | <= 3.2.3 |
| Pepperl-Fuchs | Pcv100-F200-B17-V1d-6011 Firmware | <= 3.2.5 |
| Pepperl-Fuchs | Pcv100-F200-B17-V1d-6011-8203 Firmware | <= 3.2.5 |
| Pepperl-Fuchs | Pxv100a-F200-B28-V1d Firmware | <= 1.0.3 |
| Pepperl-Fuchs | Pxv100a-F200-B28-V1d-6011 Firmware | <= 1.0.3 |
| Pepperl-Fuchs | Pgv100a-F200-B28-V1d Firmware | <= 1.0.3 |
| Pepperl-Fuchs | Pgv100a-F200a-B28-V1d Firmware | <= 1.0.3 |
| Pepperl-Fuchs | Pgv100aq-F200a-B28-V1d Firmware | <= 2.1.1 |
| Pepperl-Fuchs | Pgv100aq-F200-B28-V1d Firmware | <= 2.1.1 |
| Pepperl-Fuchs | Pxv100aq-F200-B28-V1d Firmware | <= 2.1.1 |
| Pepperl-Fuchs | Pxv100aq-F200-B28-V1d-6011 Firmware | <= 2.1.1 |
| Pepperl-Fuchs | Ohv-F230-B17 Firmware | <= 1.1.0 |
| Pepperl-Fuchs | Oit500-F113b17-Cb Firmware | <= 1.3.4 |
| Pepperl-Fuchs | Pha Firmware | <= 3.1.5 |
| Pepperl-Fuchs | Wcs Firmware | <= 3.0.0 |
References
- https://cert.vde.com/en-us/advisories/vde-2021-006Third Party Advisory
- https://cert.vde.com/en-us/advisories/vde-2021-006Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20986?
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.
How severe is CVE-2021-20986?
CVE-2021-20986 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20986?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-20986?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST