CVE-2022-27640 describes a denial-of-service vulnerability affecting Siemens SIMATIC CP 442-1 RNA and CP 443-1 RNA devices (all versions prior to V1.5.18). The flaw stems from improper handling of excessive ARP broadcast requests, allowing an attacker on the local network to trigger a device reboot through an ARP storming attack. This vulnerability carries a CVSS score of 6.5 (Medium), indicating an attack vector requiring adjacent network access with low complexity and a high impact on availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.5.18CPE matchmatch criteria | cpe:2.3:o:siemens:simatic_cp_442-1_rna_firmware:*:*:*:*:*:*:*:* | ||
< 1.5.18CPE matchmatch criteria | cpe:2.3:o:siemens:simatic_cp_443-1_rna_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:A/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, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
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.