Siemens RUGGEDCOM ROS before 4.2.1 allows remote attackers to obtain sensitive information by sniffing the network for VLAN data within the padding section of an Ethernet frame.
Conclusion & alert: CVE-2015-7836 is rated Low Risk (33.4/100): CVSS Low severity, with medium exploitation likelihood (EPSS 0.93%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.23% | 0.93% | +0.70% |
| 2 | 2026-03-21 | 0.27% | 0.23% | -0.04% |
| 3 | 2025-06-26 | — | 0.27% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 3.3 | 2.0 | LOW |
|
6.5 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| siemens | ruggedcom_rugged_operating_system | <= 4.2.0 | cpe:2.3:o:siemens:ruggedcom_rugged_operating_system:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.securitytracker.com/id/1033973 | |
| http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-921524.pdf | Vendor Advisory |
| https://ics-cert.us-cert.gov/advisories/ICSA-15-300-01 | Third Party Advisory US Government Resource |