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CVE-2020-7533

28
FAUCET Score

CVE-2020-7533 is a critical improper authentication vulnerability (CWE-287) affecting Schneider Electric products, allowing unauthenticated attackers to execute commands on the web server via specially crafted HTTP requests. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While no public exploit code (Metasploit, Nuclei, ExploitDB) or active exploitation (KEV) has been identified, and community discussion and media coverage are minimal, the inherent severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.20CPE matchmatch criteria
cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware:*:*:*:*:*:*:*:*
< 3.20CPE matchmatch criteria
cpe:2.3:o:schneider-electric:modicon_m340_bmxp342000_firmware:*:*:*:*:*:*:*:*
< 3.20CPE matchmatch criteria
cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware:*:*:*:*:*:*:*:*
< 3.20CPE matchmatch criteria
cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102_firmware:*:*:*:*:*:*:*:*
< 3.3CPE matchmatch criteria
cpe:2.3:o:schneider-electric:bmxnoe0100_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.24%
Probability of exploitation in next 30 days
EPSS Percentile
81.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0224 is in the 70th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

se.com / ww/en/download/document/SEVD-2020-287-01
Vendor Advisory
download.schneider-electric.com / files