CVE-2018-7852 is an Uncaught Exception vulnerability affecting all versions of Schneider Electric Modicon M580, M340, Quantum, and Premium PLCs. An unauthenticated attacker can exploit this vulnerability by sending a specially crafted invalid private command parameter over Modbus, leading to a denial of service (DoS) for the affected controller. This vulnerability has a CVSSv3 score of 7.5 (High) due to its network-based attack vector, low attack complexity, and high impact on availability. While there is no known public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness within the cybersecurity community. It is not listed on the CISA KEV catalog, suggesting it is not currently under active widespread exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
All Versions ImpactedCPE matchmatch criteria | cpe:2.3:o:schneider-electric:modicon_m580_firmware:*:*:*:*:*:*:*:* | ||
All Versions ImpactedCPE matchmatch criteria | cpe:2.3:o:schneider-electric:modicon_m340_firmware:*:*:*:*:*:*:*:* | ||
All Versions ImpactedCPE matchmatch criteria | cpe:2.3:o:schneider-electric:modicon_quantum_firmware:*:*:*:*:*:*:*:* | ||
All Versions ImpactedCPE matchmatch criteria | cpe:2.3:o:schneider-electric:modicon_premium_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.