CVE-2021-34566criticalCWE-120

CVE-2021-34566: critical vulnerability in WAGO 750-81xx/xxx-xxxFW

WAGO I/O-Check Service prone to Memory Overflow

Published · Updated

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.1epss 1.4%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
WAGO · 750-81xx/xxx-xxxFWWAGO · 750-82xx/xxx-xxxWAGO · 752-8303/8000-0002WAGO · 762-4xxxWAGO · 762-5xxxWAGO · 762-6xxx
Related CVEs — WAGO 750-81xx/xxx-xxxFW

In the same product, most dangerous first.

CVE-2021-34568HIGHWAGO I/O-Check Service prone to Allocation of Resources Without Limits or ThrottlingEPSS 1.2%CVE-2021-34567HIGHWAGO I/O-Check Service prone to Out-of-bounds ReadEPSS 1.0%CVE-2021-34569CRITICALWAGO I/O-Check Service prone to Out-of-bounds WriteEPSS 1.0%