CVE-2021-34566

EUVD-2021-21216
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.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CERTVDECNA
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 75%
Affected Products (NVD)
VendorProductVersion
wago750-8100_firmware
𝑥
< 18
wago750-8101_firmware
𝑥
< 18
wago750-8101\/025-000_firmware
𝑥
< 18
wago750-8102_firmware
𝑥
< 18
wago750-8102\/025-000_firmware
𝑥
< 18
wago750-8202_firmware
𝑥
< 18
wago750-8202\/000-011_firmware
𝑥
< 18
wago750-8202\/000-012_firmware
𝑥
< 18
wago750-8202\/000-022_firmware
𝑥
< 18
wago750-8202\/025-000_firmware
𝑥
< 18
wago750-8202\/025-001_firmware
𝑥
< 18
wago750-8202\/025-002_firmware
𝑥
< 18
wago750-8202\/040-000_firmware
𝑥
< 18
wago750-8202\/040-001_firmware
𝑥
< 18
wago752-8303\/8000-002_firmware
𝑥
< 18
wago762-4101_firmware
𝑥
< 18
wago762-4102_firmware
𝑥
< 18
wago762-4103_firmware
𝑥
< 18
wago762-4104_firmware
𝑥
< 18
wago762-4201\/8000-001_firmware
𝑥
< 18
wago762-4202\/8000-001_firmware
𝑥
< 18
wago762-4203\/8000-001_firmware
𝑥
< 18
wago762-4204\/8000-001_firmware
𝑥
< 18
wago762-4205\/8000-001_firmware
𝑥
< 18
wago762-4205\/8000-002_firmware
𝑥
< 18
wago762-4206\/8000-001_firmware
𝑥
< 18
wago762-4206\/8000-002_firmware
𝑥
< 18
wago762-4301\/8000-002_firmware
𝑥
< 18
wago762-4302\/8000-002_firmware
𝑥
< 18
wago762-4303\/8000-002_firmware
𝑥
< 18
wago762-4304\/8000-002_firmware
𝑥
< 18
wago762-4305\/8000-002_firmware
𝑥
< 18
wago762-4306\/8000-002_firmware
𝑥
< 18
wago762-5203\/8000-001_firmware
𝑥
< 18
wago762-5204\/8000-001_firmware
𝑥
< 18
wago762-5205\/8000-001_firmware
𝑥
< 18
wago762-5206\/8000-001_firmware
𝑥
< 18
wago762-5303\/8000-002_firmware
𝑥
< 18
wago762-5304\/8000-002_firmware
𝑥
< 18
wago762-5305\/8000-002_firmware
𝑥
< 18
wago762-5306\/8000-002_firmware
𝑥
< 18
wago762-6201\/8000-001_firmware
𝑥
< 18
wago762-6202\/8000-001_firmware
𝑥
< 18
wago762-6203\/8000-001_firmware
𝑥
< 18
wago762-6204\/8000-001_firmware
𝑥
< 18
wago762-6301\/8000-002_firmware
𝑥
< 18
wago762-6302\/8000-002_firmware
𝑥
< 18
wago762-6303\/8000-002_firmware
𝑥
< 18
wago762-6304\/8000-002_firmware
𝑥
< 18
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://cert.vde.com/en/advisories/VDE-2020-036/
https://cert.vde.com/en/advisories/VDE-2020-036/