Schneider Electric Modicon M340 CPU Web Server out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability was 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 critical. Affected by this issue is some unknown functionality of the component Web Server. Executing a manipulation can lead to out-of-bounds write. This vulnerability is tracked as CVE-2021-22788. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was 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 vulnerability affects an unknown code of the component Web Server. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 02/12/2022 as SEVD-2021-257-02. The advisory is shared for download at download.schneider-electric.com. This vulnerability was named CVE-2021-22788 since 01/06/2021. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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-2021-22788 (🔍)
GCVE (CVE): GCVE-0-2021-22788
GCVE (VulDB): GCVE-100-192952

Entryinfo

Created: 02/12/2022 10:48
Updated: 06/01/2026 00:14
Changes: 02/12/2022 10:48 (39), 02/17/2022 08:04 (1), 06/01/2026 00:14 (42)
Complete: 🔍
Cache ID: 216::103

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