Acresso InstallShield Update Agent does not properly verify the authenticity of Rule Scripts obtained from GetRules.asp web pages on FLEXnet Connect servers, which allows remote man-in-the-middle attackers to execute arbitrary VBScript code via Trojan horse Rules.
Conclusion & alert: CVE-2008-1093 is rated Moderate Risk (63.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.63%). 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 | 0.75% | 1.63% | +0.88% |
| 2 | 2026-02-06 | 0.85% | 0.75% | -0.10% |
| 3 | 2025-05-27 | — | 0.85% | — |
Full EPSS history (9 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 | Product | Version | Raw CPE |
|---|---|---|---|
| acresso | flexnet_connect | — | cpe:2.3:a:acresso:flexnet_connect:*:*:*:*:*:*:*:* |
| acresso | intallshield_update_agent | — | cpe:2.3:a:acresso:intallshield_update_agent:*:*:*:*:*:*:*:* |