CVE-2020-7537 describes an improper check for unusual or exceptional conditions (CWE-754) in Schneider Electric Modicon M580, M340, Quantum, and Premium controllers. This vulnerability allows an unauthenticated attacker to cause a denial of service by sending a specially crafted Read Physical Memory request via Modbus. With a CVSS score of 7.5 (HIGH), it presents a significant risk due to its network-based attack vector, low attack complexity, and high impact on availability. While there is no public exploit code available (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered notable community discussion and media coverage, indicating awareness and potential for future exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.20CPE matchmatch criteria | cpe:2.3:o:schneider-electric:modicon_m580_bmep584040_firmware:*:*:*:*:*:*:*:* | ||
< 3.20CPE matchmatch criteria | cpe:2.3:o:schneider-electric:modicon_m580_bmep582040_firmware:*:*:*:*:*:*:*:* | ||
< 3.20CPE matchmatch criteria | cpe:2.3:o:schneider-electric:modicon_m580_bmep586040_firmware:*:*:*:*:*:*:*:* | ||
< 3.20CPE matchmatch criteria | cpe:2.3:o:schneider-electric:modicon_m580_bmep585040_firmware:*:*:*:*:*:*:*:* | ||
< 3.20CPE matchmatch criteria | cpe:2.3:o:schneider-electric:modicon_m580_bmep582020_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.