Office Viewer in Apple iOS before 8.4.1 and OS X before 10.10.5 allows remote attackers to read arbitrary files via an XML document containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.
Conclusion & alert: CVE-2015-3784 is rated Moderate Risk (50.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.50%). Core evidence: EPSS rose +1.63% over the last day, indicating growing attacker interest. 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 | 2026-06-15 | 0.87% | 2.50% | +1.63% |
| 2 | 2025-06-11 | 0.80% | 0.87% | +0.07% |
| 3 | 2025-05-25 | — | 0.80% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apple | mac_os_x | <= 10.10.4 | cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* |
| apple | iphone_os | <= 8.4 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | numbers | <= 3.5 | cpe:2.3:a:apple:numbers:*:*:*:*:*:*:*:* |
| apple | keynote | <= 6.5 | cpe:2.3:a:apple:keynote:*:*:*:*:*:*:*:* |
| apple | pages | <= 5.5.3 | cpe:2.3:a:apple:pages:*:*:*:*:*:*:*:* |
| apple | iwork | <= 2.5.4 | cpe:2.3:a:apple:iwork:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html | Vendor Advisory |
| http://lists.apple.com/archives/security-announce/2015/Aug/msg00002.html | Vendor Advisory |
| http://lists.apple.com/archives/security-announce/2015/Oct/msg00000.html | Vendor Advisory |
| http://www.securityfocus.com/bid/76343 | |
| http://www.securitytracker.com/id/1033275 | |
| https://support.apple.com/HT205373 | Vendor Advisory |
| https://support.apple.com/kb/HT205030 | Vendor Advisory |
| https://support.apple.com/kb/HT205031 | Vendor Advisory |