CVE-2021-34566

CRITICALImmediate

Published:Nov 9, 2022(3 years ago)

Modified:Nov 21, 2024

Remote ExploitNo Auth RequiredNo InteractionLow Complexity

Vulnerability 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.

Attack Characteristics

Network AccessLow ComplexityNo Auth NeededNo User Interaction

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AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

196

Vendor	Product	Versions	Fixed In
wago	750-8100_firmware	18	-
wago	750-8100_firmware	-	-
wago	750-8100_firmware	-

Timeline

Published
CVE disclosed publicly
Nov 9, 20223 years ago
Last Modified
Most recent update
Nov 21, 20241 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20261 month ago

References

https://cert.vde.com/en/advisories/VDE-2020-036/Vendor Advisory
https://cert.vde.com/en/advisories/VDE-2020-036/Vendor Advisory

CVSS Score

v3.1

9.1/ 10.0

CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

At a Glance

196

Affected Products

References

wago / 750-8100_firmware

CVE-2021-34566

Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

CVE-2021-34566

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description