Directory traversal vulnerability in u5admin/deletefile.php in u5CMS before 3.9.4 allows remote attackers to write to arbitrary files via a (1) .. (dot dot) or (2) full pathname in the f parameter.
Conclusion & alert: CVE-2015-1577 is rated High Exploit Risk (77.8/100): CVSS Medium severity, with high exploitation likelihood (EPSS 10.30%, 93th percentile). Core evidence: 5 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +4.76% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| 36026 | exploit_db | edb | 2015-02-09 | Exploit-DB ↗ |
| 36025 | exploit_db | edb | 2015-02-08 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2025-05-21 | 5.54% | 10.30% | +4.76% |
| 2 | 2025-04-17 | 9.36% | 5.54% | -3.82% |
| 3 | 2025-03-30 | — | 9.36% | — |
Full EPSS history (19 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.4 | 2.0 | MEDIUM |
|
10.0 | 4.9 | [email protected] |