Use-after-free vulnerability in Apple Safari 4.0.5 on Windows allows remote attackers to execute arbitrary code by using window.open to create a popup window for a crafted HTML document, and then calling the parent window's close method, which triggers improper handling of a deleted window object.
Conclusion & alert: CVE-2010-1939 is rated High Exploit Risk (84.8/100): CVSS High severity, with high exploitation likelihood (EPSS 64.86%, 98th percentile). Core evidence: 4 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +14.14% 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 |
|---|---|---|---|---|
| 12614 | exploit_db | edb | 2010-05-15 | Exploit-DB ↗ |
| 12573 | exploit_db | edb | 2010-05-11 | 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 | 2026-01-16 | 50.72% | 64.86% | +14.14% |
| 2 | 2025-05-06 | 62.61% | 50.72% | -11.89% |
| 3 | 2025-03-30 | — | 62.61% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.6 | 2.0 | HIGH |
|
4.9 | 10.0 | [email protected] |
: CWE-416 'Use After Free' http://cwe.mitre.org/data/definitions/416.html