CVE-2021-34566

WAGO I/O-Check Service prone to Memory Overflow

Description

In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to crash the iocheck process and write memory resulting in loss of integrity and DoS.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.21%
Vendor Advisory vde.com
Affected: WAGO 750-81xx/xxx-xxxFW
Affected: WAGO 750-82xx/xxx-xxx
Affected: WAGO 752-8303/8000-0002
Affected: WAGO 762-4xxx
Affected: WAGO 762-5xxx
Affected: WAGO 762-6xxx
Published at:
Updated at:

References

Link Tags
https://cert.vde.com/en/advisories/VDE-2020-036/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-34566?
CVE-2021-34566 has been scored as a critical severity vulnerability.
How to fix CVE-2021-34566?
To fix CVE-2021-34566, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34566 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34566 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34566?
CVE-2021-34566 affects WAGO 750-81xx/xxx-xxxFW, WAGO 750-82xx/xxx-xxx, WAGO 752-8303/8000-0002, WAGO 762-4xxx, WAGO 762-5xxx, WAGO 762-6xxx.
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