VDB-165092 · CVE-2020-7563 · SEVD-2020-315-01

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

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.
6.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Schneider Electric Modicon M340, Modicon Quantum and Modicon Premium Legacy and classified as critical. This issue affects some unknown processing of the component Web Server. Such manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2020-7563. No exploit exists.

Detailsinfo

A vulnerability was found in Schneider Electric Modicon M340, Modicon Quantum and Modicon Premium Legacy (SCADA Software) (the affected version is unknown) and classified as critical. Affected by this issue is an unknown code of the component Web Server. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 11/18/2020 as SEVD-2020-315-01. The advisory is shared for download at se.com. This vulnerability is handled as CVE-2020-7563. There are neither technical details nor an exploit publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

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: 6.9
VulDB Meta Temp Score: 6.9

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

NVD Base Score: 8.8
NVD Vector: 🔍

ADP CISA Base Score: 6.3
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: 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: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/21/2020 🔍
11/18/2020 +302 days 🔍
11/18/2020 +0 days 🔍
05/30/2026 +2019 days 🔍

Sourcesinfo

Vendor: schneider-electric.com

Advisory: SEVD-2020-315-01
Status: Confirmed

CVE: CVE-2020-7563 (🔍)
GCVE (CVE): GCVE-0-2020-7563
GCVE (VulDB): GCVE-100-165092

Entryinfo

Created: 11/18/2020 18:12
Updated: 05/30/2026 16:58
Changes: 11/18/2020 18:12 (37), 12/08/2020 17:03 (2), 12/08/2020 17:08 (18), 05/30/2026 16:58 (26)
Complete: 🔍
Cache ID: 216::103