CVE-2021-34569criticalCWE-787

CVE-2021-34569: critical vulnerability in WAGO 750-81xx/xxx-xxxFW

WAGO I/O-Check Service prone to Out-of-bounds Write

Published · Updated

Follow this CVE+ Monitor 750-81xx/xxx-xxxFW+ Monitor 750-82xx/xxx-xxx

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

28Vexday Risk Score

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

ssvc Trackcvss 9.8epss 1.0%
In WAGO I/O-Check Service in multiple products an attacker can send a specially crafted packet containing OS commands to crash the diagnostic tool and write memory.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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-2021-34566CRITICALWAGO I/O-Check Service prone to Memory OverflowEPSS 1.4%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%