CVE-2015-2177 is a critical denial-of-service vulnerability affecting Siemens SIMATIC S7-300 CPU devices. An unauthenticated remote attacker can trigger a defect-mode transition by sending specially crafted packets to TCP port 102 or via Profibus, rendering the device inoperable. With a CVSS score of 7.8, this vulnerability is easily exploitable over the network with low complexity and no authentication required, leading to a complete loss of availability. While not listed on CISA's KEV, public exploit code exists (EDB-44802), and it has garnered some community discussion and media coverage, indicating a known and potentially exploitable threat.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
All Versions ImpactedCPE matchmatch criteria | cpe:2.3:o:siemens:simatic_s7-300_cpu_firmware:*:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:h:siemens:simatic_s7-300_cpu:-:*:*:*:*:*:*:* |
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.