The deserialization code in PHP before 4.3.10 and PHP 5.x up to 5.0.2 allows remote attackers to cause a denial of service and execute arbitrary code via untrusted data to the unserialize function that may trigger "information disclosure, double-free and negative reference index array underflow" results.
Conclusion & alert: CVE-2004-1019 is rated High Risk (74.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 8.00%, 94th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.02% 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 | 2026-06-15 | 5.98% | 8.00% | +2.02% |
| 2 | 2026-05-09 | 6.77% | 5.98% | -0.79% |
| 3 | 2025-12-28 | — | 6.77% | — |
Full EPSS history (19 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 |
|---|---|---|---|
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2004-1019 |
ubuntu
|
medium | CVE-2004-1019 medium priority: Ubuntu including 2 source packages (php4, php5), 8 status rows across 4 suites (dapper, edgy, feisty, upstream): released 5, needs-triage 2, DNE 1. | https://ubuntu.com/security/CVE-2004-1019 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| openpkg | openpkg | 2.1 | cpe:2.3:a:openpkg:openpkg:2.1:*:*:*:*:*:*:* |
| openpkg | openpkg | 2.2 | cpe:2.3:a:openpkg:openpkg:2.2:*:*:*:*:*:*:* |
| openpkg | openpkg | current | cpe:2.3:a:openpkg:openpkg:current:*:*:*:*:*:*:* |
| php | php | 3.0 | cpe:2.3:a:php:php:3.0:*:*:*:*:*:*:* |
| php | php | 3.0.1 | cpe:2.3:a:php:php:3.0.1:*:*:*:*:*:*:* |
| php | php | 3.0.2 | cpe:2.3:a:php:php:3.0.2:*:*:*:*:*:*:* |
| php | php | 3.0.3 | cpe:2.3:a:php:php:3.0.3:*:*:*:*:*:*:* |
| php | php | 3.0.4 | cpe:2.3:a:php:php:3.0.4:*:*:*:*:*:*:* |
| php | php | 3.0.5 | cpe:2.3:a:php:php:3.0.5:*:*:*:*:*:*:* |
| php | php | 3.0.6 | cpe:2.3:a:php:php:3.0.6:*:*:*:*:*:*:* |
| php | php | 3.0.7 | cpe:2.3:a:php:php:3.0.7:*:*:*:*:*:*:* |
| php | php | 3.0.8 | cpe:2.3:a:php:php:3.0.8:*:*:*:*:*:*:* |
| php | php | 3.0.9 | cpe:2.3:a:php:php:3.0.9:*:*:*:*:*:*:* |
| php | php | 3.0.10 | cpe:2.3:a:php:php:3.0.10:*:*:*:*:*:*:* |
| php | php | 3.0.11 | cpe:2.3:a:php:php:3.0.11:*:*:*:*:*:*:* |
| php | php | 3.0.12 | cpe:2.3:a:php:php:3.0.12:*:*:*:*:*:*:* |
| php | php | 3.0.13 | cpe:2.3:a:php:php:3.0.13:*:*:*:*:*:*:* |
| php | php | 3.0.14 | cpe:2.3:a:php:php:3.0.14:*:*:*:*:*:*:* |
| php | php | 3.0.15 | cpe:2.3:a:php:php:3.0.15:*:*:*:*:*:*:* |
| php | php | 3.0.16 | cpe:2.3:a:php:php:3.0.16:*:*:*:*:*:*:* |
| php | php | 3.0.17 | cpe:2.3:a:php:php:3.0.17:*:*:*:*:*:*:* |
| php | php | 3.0.18 | cpe:2.3:a:php:php:3.0.18:*:*:*:*:*:*:* |
| php | php | 4.0 | cpe:2.3:a:php:php:4.0:*:*:*:*:*:*:* |
| php | php | 4.0.1 | cpe:2.3:a:php:php:4.0.1:*:*:*:*:*:*:* |
| php | php | 4.0.1 | cpe:2.3:a:php:php:4.0.1:patch1:*:*:*:*:*:* |
| php | php | 4.0.1 | cpe:2.3:a:php:php:4.0.1:patch2:*:*:*:*:*:* |
| php | php | 4.0.2 | cpe:2.3:a:php:php:4.0.2:*:*:*:*:*:*:* |
| php | php | 4.0.3 | cpe:2.3:a:php:php:4.0.3:*:*:*:*:*:*:* |
| php | php | 4.0.3 | cpe:2.3:a:php:php:4.0.3:patch1:*:*:*:*:*:* |
| php | php | 4.0.4 | cpe:2.3:a:php:php:4.0.4:*:*:*:*:*:*:* |
| php | php | 4.0.5 | cpe:2.3:a:php:php:4.0.5:*:*:*:*:*:*:* |
| php | php | 4.0.6 | cpe:2.3:a:php:php:4.0.6:*:*:*:*:*:*:* |
| php | php | 4.0.7 | cpe:2.3:a:php:php:4.0.7:*:*:*:*:*:*:* |
| php | php | 4.0.7 | cpe:2.3:a:php:php:4.0.7:rc1:*:*:*:*:*:* |
| php | php | 4.0.7 | cpe:2.3:a:php:php:4.0.7:rc2:*:*:*:*:*:* |
| php | php | 4.0.7 | cpe:2.3:a:php:php:4.0.7:rc3:*:*:*:*:*:* |
| php | php | 4.1.0 | cpe:2.3:a:php:php:4.1.0:*:*:*:*:*:*:* |
| php | php | 4.1.1 | cpe:2.3:a:php:php:4.1.1:*:*:*:*:*:*:* |
| php | php | 4.1.2 | cpe:2.3:a:php:php:4.1.2:*:*:*:*:*:*:* |
| php | php | 4.2 | cpe:2.3:a:php:php:4.2:*:dev:*:*:*:*:* |
| php | php | 4.2.0 | cpe:2.3:a:php:php:4.2.0:*:*:*:*:*:*:* |
| php | php | 4.2.1 | cpe:2.3:a:php:php:4.2.1:*:*:*:*:*:*:* |
| php | php | 4.2.2 | cpe:2.3:a:php:php:4.2.2:*:*:*:*:*:*:* |
| php | php | 4.2.3 | cpe:2.3:a:php:php:4.2.3:*:*:*:*:*:*:* |
| php | php | 4.3.0 | cpe:2.3:a:php:php:4.3.0:*:*:*:*:*:*:* |
| php | php | 4.3.1 | cpe:2.3:a:php:php:4.3.1:*:*:*:*:*:*:* |
| php | php | 4.3.2 | cpe:2.3:a:php:php:4.3.2:*:*:*:*:*:*:* |
| php | php | 4.3.3 | cpe:2.3:a:php:php:4.3.3:*:*:*:*:*:*:* |
| php | php | 4.3.4 | cpe:2.3:a:php:php:4.3.4:*:*:*:*:*:*:* |
| php | php | 4.3.5 | cpe:2.3:a:php:php:4.3.5:*:*:*:*:*:*:* |
| php | php | 4.3.6 | cpe:2.3:a:php:php:4.3.6:*:*:*:*:*:*:* |
| php | php | 4.3.7 | cpe:2.3:a:php:php:4.3.7:*:*:*:*:*:*:* |
| php | php | 4.3.8 | cpe:2.3:a:php:php:4.3.8:*:*:*:*:*:*:* |
| php | php | 4.3.9 | cpe:2.3:a:php:php:4.3.9:*:*:*:*:*:*:* |
| php | php | 5.0 | cpe:2.3:a:php:php:5.0:rc1:*:*:*:*:*:* |
| php | php | 5.0 | cpe:2.3:a:php:php:5.0:rc2:*:*:*:*:*:* |
| php | php | 5.0 | cpe:2.3:a:php:php:5.0:rc3:*:*:*:*:*:* |
| php | php | 5.0.0 | cpe:2.3:a:php:php:5.0.0:*:*:*:*:*:*:* |
| php | php | 5.0.1 | cpe:2.3:a:php:php:5.0.1:*:*:*:*:*:*:* |
| php | php | 5.0.2 | cpe:2.3:a:php:php:5.0.2:*:*:*:*:*:*:* |
| trustix | secure_linux | 2.0 | cpe:2.3:o:trustix:secure_linux:2.0:*:*:*:*:*:*:* |
| trustix | secure_linux | 2.1 | cpe:2.3:o:trustix:secure_linux:2.1:*:*:*:*:*:*:* |
| trustix | secure_linux | 2.2 | cpe:2.3:o:trustix:secure_linux:2.2:*:*:*:*:*:*:* |
| ubuntu | ubuntu_linux | 4.1 | cpe:2.3:o:ubuntu:ubuntu_linux:4.1:*:ia64:*:*:*:*:* |
| ubuntu | ubuntu_linux | 4.1 | cpe:2.3:o:ubuntu:ubuntu_linux:4.1:*:ppc:*:*:*:*:* |