Cisco ONS 15454 controller cards with software 9.6 and earlier allow remote attackers to cause a denial of service (flash write outage) via a TCP FIN attack that triggers file-descriptor exhaustion, aka Bug ID CSCug97315.
Conclusion & alert: CVE-2014-2139 is rated Moderate Risk (40.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.41%). 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 | 2025-03-30 | 0.80% | 0.41% | -0.39% |
| 2 | 2025-03-29 | 0.39% | 0.80% | +0.42% |
| 3 | 2025-03-17 | — | 0.39% | — |
Full EPSS history (5 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 | cisco_ons_15454_system_software | <= 9.6 | cpe:2.3:o:cisco:cisco_ons_15454_system_software:*:*:*:*:*:*:*:* |
| cisco | cisco_ons_15454_system_software | 9.0 | cpe:2.3:o:cisco:cisco_ons_15454_system_software:9.0:*:*:*:*:*:*:* |
| cisco | cisco_ons_15454_system_software | 9.1 | cpe:2.3:o:cisco:cisco_ons_15454_system_software:9.1:*:*:*:*:*:*:* |
| cisco | cisco_ons_15454_system_software | 9.2 | cpe:2.3:o:cisco:cisco_ons_15454_system_software:9.2:*:*:*:*:*:*:* |
| cisco | cisco_ons_15454_system_software | 9.2.1 | cpe:2.3:o:cisco:cisco_ons_15454_system_software:9.2.1:*:*:*:*:*:*:* |
| cisco | cisco_ons_15454_system_software | 9.2.2 | cpe:2.3:o:cisco:cisco_ons_15454_system_software:9.2.2:*:*:*:*:*:*:* |
| cisco | cisco_ons_15454_system_software | 9.3 | cpe:2.3:o:cisco:cisco_ons_15454_system_software:9.3:*:*:*:*:*:*:* |
| cisco | cisco_ons_15454_system_software | 9.4 | cpe:2.3:o:cisco:cisco_ons_15454_system_software:9.4:*:*:*:*:*:*:* |
| cisco | ons_15454 | — | cpe:2.3:h:cisco:ons_15454:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-2139 | Vendor Advisory |
| http://tools.cisco.com/security/center/viewAlert.x?alertId=33681 | Vendor Advisory |