The Trend Micro scan engine before 8.320 for Windows and before 8.150 on HP-UX and AIX, as used in Trend Micro PC Cillin - Internet Security 2006, Office Scan 7.3, and Server Protect 5.58, allows remote attackers to cause a denial of service (CPU consumption and system hang) via a malformed RAR archive with an Archive Header section with the head_size and pack_size fields set to zero, which triggers an infinite loop.
Conclusion & alert: CVE-2006-6458 is rated Moderate Risk (61.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.52%). Core evidence: EPSS rose +1.62% 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 | 0.91% | 2.52% | +1.62% |
| 2 | 2025-07-30 | 0.74% | 0.91% | +0.16% |
| 3 | 2025-03-30 | — | 0.74% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 2.0 | HIGH |
|
10.0 | 6.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2006-6458: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. | https://security.alpinelinux.org/vuln/CVE-2006-6458 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| trend_micro | officescan | 7.3 | cpe:2.3:a:trend_micro:officescan:7.3:*:*:*:*:*:*:* |
| trend_micro | pc_cillin_-_internet_security_2006 | — | cpe:2.3:a:trend_micro:pc_cillin_-_internet_security_2006:*:*:*:*:*:*:*:* |
| trend_micro | serverprotect | 5.58 | cpe:2.3:a:trend_micro:serverprotect:5.58:*:emc:*:*:*:*:* |