CVE-2021-20986
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 1.0% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.0% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.0% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Modified
Affected
- Hilscher Profinet Io Device Firmware < 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
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-20986.md and follow it. Check whether this project is affected by CVE-2021-20986. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://kb.hilscher.com/display/ISMS/2020-12-03+Denial+of+Service+vulnerability+in+PROFINET+IO+Device
- https://kb.hilscher.com/display/ISMS/2020-12-03+Denial+of+Service+vulnerability+in+PROFINET+IO+Device
References
- https://cert.vde.com/en-us/advisories/vde-2021-006
- https://kb.hilscher.com/display/ISMS/2020-12-03+Denial+of+Service+vulnerability+in+PROFINET+IO+Device
- https://cert.vde.com/en-us/advisories/vde-2021-006
- https://kb.hilscher.com/display/ISMS/2020-12-03+Denial+of+Service+vulnerability+in+PROFINET+IO+Device