Juniper NetScreen Firewall running ScreenOS 5.4, 6.2, or 6.3, when the Ping of Death screen is disabled, allows remote attackers to cause a denial of service via a crafted packet.
Conclusion & alert: CVE-2013-6958 is rated Moderate Risk (53.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.71%). 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 | 2025-05-23 | 0.85% | 0.71% | -0.14% |
| 2 | 2025-03-30 | 0.63% | 0.85% | +0.22% |
| 3 | 2025-03-29 | — | 0.63% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.1 | 2.0 | HIGH |
|
8.6 | 6.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| juniper | screenos | 5.4.0 | cpe:2.3:o:juniper:screenos:5.4.0:*:*:*:*:*:*:* |
| juniper | screenos | 6.2.0 | cpe:2.3:o:juniper:screenos:6.2.0:*:*:*:*:*:*:* |
| juniper | screenos | 6.3.0 | cpe:2.3:o:juniper:screenos:6.3.0:*:*:*:*:*:*:* |
| juniper | netscreen-5200 | — | cpe:2.3:h:juniper:netscreen-5200:-:*:*:*:*:*:*:* |
| juniper | netscreen-5400 | — | cpe:2.3:h:juniper:netscreen-5400:-:*:*:*:*:*:*:* |