Microsoft Internet Explorer 5.01 through 7 allows remote attackers to execute arbitrary code via a crafted website using Javascript that creates, modifies, deletes, and accesses document objects using the tags property, which triggers heap corruption, related to uninitialized or deleted objects, a different issue than CVE-2007-3902 and CVE-2007-3903, and a variant of "Uninitialized Memory Corruption Vulnerability."
Conclusion & alert: CVE-2007-5344 is rated Moderate Risk (55.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 19.59%, 95th 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 | 2026-04-08 | 26.54% | 19.59% | -6.95% |
| 2 | 2026-03-25 | 27.87% | 26.54% | -1.33% |
| 3 | 2026-03-02 | — | 27.87% | — |
Full EPSS history (24 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | ie | 5.x | cpe:2.3:a:microsoft:ie:5.x:*:*:*:*:*:*:* |
| microsoft | ie | 6.0 | cpe:2.3:a:microsoft:ie:6.0:sp1:*:*:*:*:*:* |
| microsoft | ie | 6.0 | cpe:2.3:a:microsoft:ie:6.0:sp2:*:*:*:*:*:* |
| microsoft | internet_explorer | 5 | cpe:2.3:a:microsoft:internet_explorer:5:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.01 | cpe:2.3:a:microsoft:internet_explorer:5.01:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.1 | cpe:2.3:a:microsoft:internet_explorer:5.1:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.01 | cpe:2.3:a:microsoft:internet_explorer:5.01:sp1:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.01 | cpe:2.3:a:microsoft:internet_explorer:5.01:sp2:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.01 | cpe:2.3:a:microsoft:internet_explorer:5.01:sp3:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.01 | cpe:2.3:a:microsoft:internet_explorer:5.01:sp4:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.2.3 | cpe:2.3:a:microsoft:internet_explorer:5.2.3:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.5 | cpe:2.3:a:microsoft:internet_explorer:5.5:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.5 | cpe:2.3:a:microsoft:internet_explorer:5.5:preview:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.5 | cpe:2.3:a:microsoft:internet_explorer:5.5:sp1:*:*:*:*:*:* |
| microsoft | internet_explorer | 5.5 | cpe:2.3:a:microsoft:internet_explorer:5.5:sp2:*:*:*:*:*:* |
| microsoft | internet_explorer | 6 | cpe:2.3:a:microsoft:internet_explorer:6:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 6 | cpe:2.3:a:microsoft:internet_explorer:6:sp1:*:*:*:*:*:* |
| microsoft | internet_explorer | 6.0 | cpe:2.3:a:microsoft:internet_explorer:6.0:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 6.0.2600 | cpe:2.3:a:microsoft:internet_explorer:6.0.2600:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 6.0.2800 | cpe:2.3:a:microsoft:internet_explorer:6.0.2800:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 6.0.2800.1106 | cpe:2.3:a:microsoft:internet_explorer:6.0.2800.1106:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 6.0.2900 | cpe:2.3:a:microsoft:internet_explorer:6.0.2900:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 6.0.2900.2180 | cpe:2.3:a:microsoft:internet_explorer:6.0.2900.2180:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 7 | cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 7.0 | cpe:2.3:a:microsoft:internet_explorer:7.0:*:*:*:*:*:*:* |
| microsoft | internet_explorer | 7.0 | cpe:2.3:a:microsoft:internet_explorer:7.0:beta:*:*:*:*:*:* |
| microsoft | internet_explorer | 7.0 | cpe:2.3:a:microsoft:internet_explorer:7.0:beta1:*:*:*:*:*:* |
| microsoft | internet_explorer | 7.0 | cpe:2.3:a:microsoft:internet_explorer:7.0:beta2:*:*:*:*:*:* |
| microsoft | internet_explorer | 7.0 | cpe:2.3:a:microsoft:internet_explorer:7.0:beta3:*:*:*:*:*:* |
| microsoft | internet_explorer | 7.0.5730.11 | cpe:2.3:a:microsoft:internet_explorer:7.0.5730.11:*:*:*:*:*:*:* |