PT-2021-3331 · Wago · Wago Pfc 200

Published 2021-05-24 · Updated 2025-08-15 · CVE-2021-21000

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions WAGO PFC200 devices (affected versions not specified)

Description The issue is related to the WAGO PFC200 devices, where an attacker with network access can cause a denial of service for the login service of the runtime by sending specially crafted packets. This is due to an unlimited resource allocation in the device's firmware. The exploitation of this issue can allow a remote attacker to cause a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

BDU:2021-03132

CVE-2021-21000

Affected Products

Wago Pfc 200

References · 6

• https://osv.dev/vulnerability/CVE-2021-21000 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03132 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-21000 · Security Note
• https://t.me/cveNotify/132525 · Telegram Post
• https://cert.vde.com/en-us/advisories/vde-2021-014 · Note
• https://t.me/cvenotify/15220 · Telegram Post