VDB-192951 · CVE-2021-22787 · SEVD-2021-257-02

Schneider Electric Modicon M340 CPU Web Server denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Schneider Electric Modicon M340 CPU, Modicon M340 X80 Ethernet Communication Module, Modicon Premium Processor, Modicon Quantum Processor, Modicon Quantum Communication Module and Modicon Premium Communication Module and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Web Server. Performing a manipulation results in denial of service. This vulnerability is identified as CVE-2021-22787. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Schneider Electric Modicon M340 CPU, Modicon M340 X80 Ethernet Communication Module, Modicon Premium Processor, Modicon Quantum Processor, Modicon Quantum Communication Module and Modicon Premium Communication Module (SCADA Software). This affects an unknown part of the component Web Server. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was released 02/12/2022 as SEVD-2021-257-02. It is possible to read the advisory at download.schneider-electric.com. This vulnerability is uniquely identified as CVE-2021-22787 since 01/06/2021. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

SCADA Software

Vendor

Schneider Electric

Name

License

commercial

Website

Vendor: https://www.schneider-electric.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/06/2021 🔍
02/12/2022 +402 days 🔍
02/12/2022 +0 days 🔍
06/01/2026 +1569 days 🔍

Sourcesinfo

Vendor: schneider-electric.com

Advisory: SEVD-2021-257-02
Status: Confirmed

CVE: CVE-2021-22787 (🔍)
GCVE (CVE): GCVE-0-2021-22787
GCVE (VulDB): GCVE-100-192951

Entryinfo

Created: 02/12/2022 10:47
Updated: 06/01/2026 00:14
Changes: 02/12/2022 10:47 (39), 02/17/2022 07:59 (1), 06/01/2026 00:14 (42)
Complete: 🔍
Cache ID: 216::103