CVE-2015-5374 is a critical denial-of-service vulnerability affecting Siemens EN100 Ethernet modules, specifically in SIPROTEC 4 and SIPROTEC Compact devices running various firmware variants prior to specified versions. An unauthenticated attacker can exploit this by sending specially crafted UDP packets to port 50000, causing the device to become unresponsive and requiring a manual reboot. With a CVSS score of 7.8 and an EPSS score indicating high exploitability, this vulnerability is considered severe. Exploit code is publicly available via Metasploit and ExploitDB, and it has garnered significant community discussion and media coverage, including mentions in relation to ICS malware like Industroyer, though it is not currently listed on the KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.24CPE matchmatch criteria | cpe:2.3:o:siemens:siprotec_firmware:4.24:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C
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.