Vulnerabilities

CVE-2021-34581 | BDVDB-2026-159869 Detail

WAGO750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889

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#

Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.

Weaknesses#

CWE-772 Missing Release of Resource after Effective Lifetime

References#

https://cert.vde.com/en-us/advisories/vde-2021-038

Exploit#

No public exploit known

History#

Version 12021-08-31Record published in the CVE List.
Version 22024-09-17Most recent update recorded in the CVE List.

Published

Published: 2021-08-31
Last modified: 2024-09-17

Vendor information

Vendor: WAGO
Product: 750-831/xxx-xxx, 750-880/xxx-xxx, 750-881, 750-889

All WAGO vulnerabilities

Score

7.5 High

EPSS

1.0%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 63.7.

KEV

No

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
FW4
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	None
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).