Directory traversal vulnerability in the routing component in ownCloud Server before 7.0.6 and 8.0.x before 8.0.4, when running on Windows, allows remote attackers to reinstall the application or execute arbitrary code via unspecified vectors.
Conclusion & alert: CVE-2015-4716 is rated High Risk (77.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 19.52%, 95th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +4.17% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize 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 | 2026-05-13 | 15.35% | 19.52% | +4.17% |
| 2 | 2026-05-09 | 18.57% | 15.35% | -3.21% |
| 3 | 2026-01-01 | — | 18.57% | — |
Full EPSS history (36 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
medium | CVE-2015-4716 medium priority: Ubuntu including 1 source packages (owncloud), 5 status rows across 5 suites (precise, trusty, upstream, vivid, wily): DNE 3, not-affected 1, released 1. | https://ubuntu.com/security/CVE-2015-4716 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| owncloud | owncloud | <= 7.0.5 | cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:* |
| owncloud | owncloud_server | 8.0.0 | cpe:2.3:a:owncloud:owncloud_server:8.0.0:*:*:*:*:*:*:* |
| owncloud | owncloud_server | 8.0.2 | cpe:2.3:a:owncloud:owncloud_server:8.0.2:*:*:*:*:*:*:* |
| owncloud | owncloud_server | 8.0.3 | cpe:2.3:a:owncloud:owncloud_server:8.0.3:*:*:*:*:*:*:* |
| microsoft | windows | — | cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* |