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CVE-2021-34566

CRITICAL
Published 2022-11-09T15:17:14.172Z
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Expert Analysis

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CVSS Score

V3.1
9.1
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.002
probability
of exploitation in the wild

There is a 0.2% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.438
Higher than 43.8% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
HIGH
Availability
HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

WAGO

750-81xx/xxx-xxxFW

Affected Versions:

FW1
WAGO

750-82xx/xxx-xxx

Affected Versions:

FW1
WAGO

752-8303/8000-0002

Affected Versions:

FW1
WAGO

762-4xxx

Affected Versions:

FW1
WAGO

762-5xxx

Affected Versions:

FW1
WAGO

762-6xxx

Affected Versions:

FW1

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed CRITICAL

GHSA-xcqq-8632-69xx

Advisory Details

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 Scoring

CVSS Score

9.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-34566
WEB https://cert.vde.com/en/advisories/VDE-2020-036

Advisory provided by GitHub Security Advisory Database. Published: November 9, 2022, Modified: November 9, 2022

References

https://cert.vde.com/en/advisories/VDE-2020-036/
Published: 2022-11-09T15:17:14.172Z
Last Modified: 2025-05-01T14:21:10.643Z
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