The Configuration Log File component in Cisco TelePresence Video Communication Server (VCS) Expressway X8.5.2 allows remote authenticated users to obtain sensitive information by reading a log file, aka Bug ID CSCuv12340.
Conclusion & alert: CVE-2015-4320 is rated Moderate Risk (43.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.65%). Core evidence: EPSS rose +1.45% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.
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 | 0.20% | 1.65% | +1.45% |
| 2 | 2025-06-13 | 0.40% | 0.20% | -0.21% |
| 3 | 2025-03-30 | — | 0.40% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.0 | 2.0 | MEDIUM |
|
8.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| cisco | telepresence_video_communication_server_software | x8.5.2 | cpe:2.3:a:cisco:telepresence_video_communication_server_software:x8.5.2:*:*:*:expressway:*:*:* |