CVE-2018-4840 is a high-severity vulnerability affecting Siemens DIGSI 4 (all versions < V4.92) and various EN100 Ethernet module variants, including DNP3 (< V1.05.00), IEC 104, IEC 61850 (< V4.30), Modbus TCP, and PROFINET IO. This flaw allows an unauthenticated remote attacker to upload a modified device configuration, thereby overwriting access authorization passwords. With a CVSS score of 7.5, this vulnerability is easily exploitable over the network with low attack complexity and can lead to high integrity impact by compromising device access. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity landscape.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.77CPE matchmatch criteria | cpe:2.3:o:siemens:siprotec_compact_7sj80_firmware:*:*:*:*:*:*:*:* | ||
< 4.77CPE matchmatch criteria | cpe:2.3:o:siemens:siprotec_compact_7sk80_firmware:*:*:*:*:*:*:*:* | ||
< 4.30CPE matchmatch criteria | cpe:2.3:o:siemens:siprotec_4_7sj66_firmware:*:*:*:*:*:*:*:* | ||
< 4.92CPE matchmatch criteria | cpe:2.3:o:siemens:digsi_4:*:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:o:siemens:en100_ethernet_module_iec_104_firmware:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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.