9.8
CRITICAL
CVE-2021-22772
Schneider Electric Easergy T200 Modbus IEC104 DNP3 Missing Authentication for Critical Function Vulnerability
Description

A CWE-306: Missing Authentication for Critical Function vulnerability exists in Easergy T200 ((Modbus) SC2-04MOD-07000100 and earlier), Easergy T200 ((IEC104) SC2-04IEC-07000100 and earlier), and Easergy T200 ((DNP3) SC2-04DNP-07000102 and earlier) that could cause unauthorized operation when authentication is bypassed.

INFO

Published Date :

July 21, 2021, 3:15 p.m.

Last Modified :

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

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-22772 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 t200i_firmware
2 Schneider-electric t200e_firmware
3 Schneider-electric t200p_firmware
4 Schneider-electric t200i
5 Schneider-electric t200e
6 Schneider-electric t200p
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-2021-22772.

URL Resource
http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-05 Vendor Advisory
http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-05 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-2021-22772 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-22772 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 http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-05
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Jul. 28, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-05 No Types Assigned http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-05 Vendor Advisory
    Added CWE NIST CWE-306
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:t200i_firmware:*:*:*:*:*:*:*:* versions up to (including) sc2-04mod-07000100 OR cpe:2.3:h:schneider-electric:t200i:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:t200i_firmware:*:*:*:*:*:*:*:* versions up to (including) sc2-04iec-07000100 OR cpe:2.3:h:schneider-electric:t200i:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:t200i_firmware:*:*:*:*:*:*:*:* versions up to (including) sc2-04dnp-07000102 OR cpe:2.3:h:schneider-electric:t200i:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:t200e_firmware:*:*:*:*:*:*:*:* versions up to (including) sc2-04mod-07000100 OR cpe:2.3:h:schneider-electric:t200e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:t200e_firmware:*:*:*:*:*:*:*:* versions up to (including) sc2-04iec-07000100 OR cpe:2.3:h:schneider-electric:t200e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:t200e_firmware:*:*:*:*:*:*:*:* versions up to (including) sc2-04dnp-07000102 OR cpe:2.3:h:schneider-electric:t200e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:t200p_firmware:*:*:*:*:*:*:*:* versions up to (including) sc2-04mod-07000100 OR cpe:2.3:h:schneider-electric:t200p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:t200p_firmware:*:*:*:*:*:*:*:* versions up to (including) sc2-04iec-07000100 OR cpe:2.3:h:schneider-electric:t200p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:schneider-electric:t200p_firmware:*:*:*:*:*:*:*:* versions up to (including) sc2-04dnp-07000102 OR cpe:2.3:h:schneider-electric:t200p:-:*:*:*:*:*:*:*
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-2021-22772 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

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

0.31 }} 0.09%

score

0.69692

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability