Use-after-free vulnerability in WebKit in Apple Safari before 4.0.5 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via vectors related to the run-in Cascading Style Sheets (CSS) display property.
Conclusion & alert: CVE-2010-0053 is rated High Risk (70/100): CVSS Critical severity, with high exploitation likelihood (EPSS 6.05%, 92th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. 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 | 5.60% | 6.05% | +0.45% |
| 2 | 2026-02-28 | 6.49% | 5.60% | -0.90% |
| 3 | 2025-06-18 | — | 6.49% | — |
Full EPSS history (19 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
critical | — | https://access.redhat.com/security/cve/CVE-2010-0053 |
ubuntu
|
low | CVE-2010-0053 low priority: Ubuntu including 2 source packages (qt4-x11, webkit), 20 status rows across 10 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): ignored 8, not-affected 8, needs-triage 2, DNE 1, released 1. | https://ubuntu.com/security/CVE-2010-0053 |
: Per: http://lists.apple.com/archives/security-announce/2010/Mar/msg00000.html CVE-ID: CVE-2010-0053 Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6.1 or later, Mac OS X Server v10.6.1 or later, Windows 7, Vista, XP Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution Description: A use-after-free issue exists in the rendering of content with a CSS display property set to 'run-in'. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved memory reference tracking. Credit to wushi of team509, working with TippingPoint's Zero Day Initiative for reporting this issue.
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apple | safari | <= 4.0.4 | cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* |
| apple | safari | 4.0 | cpe:2.3:a:apple:safari:4.0:*:*:*:*:*:*:* |
| apple | safari | 4.0 | cpe:2.3:a:apple:safari:4.0:beta:*:*:*:*:*:* |
| apple | safari | 4.0.0b | cpe:2.3:a:apple:safari:4.0.0b:*:*:*:*:*:*:* |
| apple | safari | 4.0.1 | cpe:2.3:a:apple:safari:4.0.1:*:*:*:*:*:*:* |
| apple | safari | 4.0.2 | cpe:2.3:a:apple:safari:4.0.2:*:*:*:*:*:*:* |
| apple | safari | 4.0.3 | cpe:2.3:a:apple:safari:4.0.3:*:*:*:*:*:*:* |