Cisco ONS 15454 System Software 10.30 and 10.301 allows remote attackers to cause a denial of service (tNetTask CPU consumption or card reset) via a flood of (1) IP or (2) Ethernet traffic, aka Bug ID CSCus57263.
Conclusion & alert: CVE-2015-0765 is rated Moderate Risk (48.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.99%). Core evidence: EPSS rose +1.53% 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 | 0.46% | 1.99% | +1.53% |
| 2 | 2025-05-21 | 0.92% | 0.46% | -0.46% |
| 3 | 2025-03-30 | — | 0.92% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| cisco | ons_15454_system_software | 10.30 | cpe:2.3:o:cisco:ons_15454_system_software:10.30:*:*:*:*:*:*:* |
| cisco | ons_15454_system_software | 10.301 | cpe:2.3:o:cisco:ons_15454_system_software:10.301:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://tools.cisco.com/security/center/viewAlert.x?alertId=39172 | Vendor Advisory |
| http://www.securitytracker.com/id/1032483 | Third Party Advisory VDB Entry |