Description

Improper Check for Unusual or Exceptional Conditions vulnerability exists in Triconex TCM 4351B installed on Tricon V11.3.x systems that could cause module reset when TCM receives malformed TriStation packets while the write-protect keyswitch is in the program position.

INFO

Published Date :

May 26, 2021, 8:15 p.m.

Last Modified :

Nov. 21, 2024, 5:50 a.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

0.3
Affected Products

The following products are affected by CVE-2021-22743 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Schneider-electric triconex_model_3009_mp_firmware
2 Schneider-electric tcm_4351b_firmware
3 Schneider-electric triconex_model_3009_mp
4 Schneider-electric tcm_4351b
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-22743.

URL Resource
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-03 Vendor Advisory
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-03 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-22743 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-22743 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-03
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jun. 07, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:P/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-03 No Types Assigned https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-130-03 Vendor Advisory
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:triconex_model_3009_mp_firmware:*:*:*:*:*:*:*:* versions from (including) 11.3.0 up to (excluding) 11.8.0 OR cpe:2.3:h:schneider-electric:triconex_model_3009_mp:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:tcm_4351b_firmware:*:*:*:*:*:*:*:* versions from (including) 11.3.0 up to (excluding) 11.5.1 *cpe:2.3:o:schneider-electric:tcm_4351b_firmware:11.7.0:*:*:*:*:*:*:* OR cpe:2.3:h:schneider-electric:tcm_4351b:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-22743 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-22743 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.05 }} 0.00%

score

0.14142

percentile

CVSS31 - Vulnerability Scoring System
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