CVE-2021-34581 - CVE House
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Status published High CVE-2021-34581

WAGO: Denial of Service vulnerability inside the OpenSSL implementation

Vulnerability Description

Missing Release of Resource after Effective Lifetime vulnerability in OpenSSL implementation of WAGO 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889 in versions FW4 up to FW15 allows an unauthenticated attacker to cause DoS on the device.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • These vulnerabilities were reported to WAGO by: Uwe Disch. Coordination done by CERT@VDE

References

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Affected Vendor

Affected Software

750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889
Vulnerable Versions:
FW4

Timeline

Official Publish: August 31st, 2021
Last Modified: September 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-772

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.