CVE-2021-34568 HIGH

CVE-2021-34568: WAGO I/O-Check Service prone to Allocation of Resources Without Limits or Throttling

Vendor Wago

Product 750-81xx/xxx-xxxFW

Weakness CWE-770 · Uncontrolled resource consumption

Published November 9, 2022

Last update May 1, 2025

View on NVD All CVEs

CVSS base score

7.5/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality None

Integrity None

CVSS vector

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

What the vulnerability does

01Description

In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to provoke a denial of service.

Key dates

02Disclosure timeline

November 9, 2022 CVE published

May 1, 2025 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2021-34568 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/770.html

Related vulnerabilities

Identifiers

CVE CVE-2021-34568

CWE CWE-770

CVSS 7.5 / HIGH