PT-2021-15175 · Schneider Electric · Modicon M241+1

Published 2021-05-26 · Updated 2022-02-03 · CVE-2021-22699

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 Modicon M241/M251 logic controllers firmware versions prior to V5.1.9.1

Description The issue is related to improper input validation, which could cause a denial of service when specific crafted requests are sent to the controller over HTTP.

Recommendations For Modicon M241/M251 logic controllers firmware versions prior to V5.1.9.1, update to version V5.1.9.1 or later to resolve the issue.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-22699

Affected Products

Modicon M241

Modicon M251

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2021-22699 · Security Note
• https://osv.dev/vulnerability/CVE-2021-22699 · Vendor Advisory
• https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-05 · Vendor Advisory
• https://t.me/cvenotify/15578 · Telegram Post
• https://t.me/cvenotify/15112 · Telegram Post
• https://t.me/cvenotify/19778 · Telegram Post