CVE-2018-4839 describes a password reconstruction vulnerability affecting various Siemens DIGSI 4, SIPROTEC 4, SIPROTEC Compact relays, and EN100 Ethernet modules. An attacker with local access to the engineering system or a privileged network position could potentially reconstruct access authorization passwords by obtaining specific network traffic. This vulnerability is rated Medium severity (CVSS 5.3) due to its network attack vector and high impact on confidentiality, though it requires high attack complexity and low privileges. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in the KEV catalog. However, it has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.
| 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:H/PR:L/UI:N/S:U/C:H/I:N/A:N
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.
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.