VULNERABILITY INTELLIGENCE

CVE-2021-22699

CVSS score7.5 HIGH
EPSS probability0.98%
CISA KEVNot currently listed
Published2021-05-26
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Improper Input Validation vulnerability exists in Modicon M241/M251 logic controllers firmware prior to V5.1.9.1 that could cause denial of service when specific crafted requests are sent to the controller over HTTP.

Weakness classification

  • cybersecurity@se.com: CWE-20

Primary references