by Kastro
Paper/Archive/CVE-2021-34566

CVE-2021-34566

WAGO 750-81xx/xxx-xxxFW — WAGO I/O-Check Service prone to Memory Overflow

EPSS 1%CVSS 9.1
critical.is priorityof 100
41
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 66.9.669 × 2013.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
750-81xx/xxx-xxxFWFW1 – FW18 Patch 2–CNA
750-82xx/xxx-xxxFW1 – FW18 Patch 2–CNA
752-8303/8000-0002FW1 – FW18 Patch 2–CNA
762-4xxxFW1 – FW18 Patch 2–CNA
762-5xxxFW1 – FW18 Patch 2–CNA
762-6xxxFW1 – FW18 Patch 2–CNA

Scores by source

CERTVDE (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refcert.vde.com/en/advisories/VDE-2020-036