A vulnerability in the internal packet-processing functionality of the Cisco StarOS operating system running on virtual platforms could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error that may occur under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device. A successful exploit could allow the attacker to prevent the targeted service interface from receiving any traffic, which would lead to a DoS condition on the affected interface. The device may have to be manually reloaded to recover from exploitation of this vulnerability.
Conclusion & alert: CVE-2019-1869 is rated Moderate Risk (61.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.06%). 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 | 2026-01-29 | 1.26% | 1.06% | -0.19% |
| 2 | 2025-11-26 | 0.48% | 1.26% | +0.77% |
| 3 | 2025-03-30 | — | 0.48% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.6 | 3.0 | HIGH |
|
3.9 | 4.0 | [email protected] |
| 7.5 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| cisco | staros | >= 21.6, < 21.6.13 | cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* |
| cisco | staros | >= 21.6b, < 21.6b.16 | cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* |
| cisco | staros | >= 21.7, < 21.7.11 | cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* |
| cisco | staros | >= 21.8, < 21.8.10 | cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* |
| cisco | staros | >= 21.9, < 21.9.7 | cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* |
| cisco | staros | >= 21.10, < 21.10.2 | cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* |
| cisco | staros | >= 21.11, < 21.11.1 | cpe:2.3:o:cisco:staros:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/108853 | Third Party Advisory VDB Entry |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190619-staros-asr-dos | Vendor Advisory |