Microsoft ISA Server 2000 allows remote attackers to poison the ISA cache or bypass content restriction policies via a malformed HTTP request packet containing multiple Content-Length headers.
Conclusion & alert: CVE-2005-1215 is rated Moderate Risk (61.2/100): CVSS High severity, with high exploitation likelihood (EPSS 10.92%, 93th 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 | 2026-05-09 | 12.44% | 10.92% | -1.52% |
| 2 | 2025-08-04 | 12.77% | 12.44% | -0.32% |
| 3 | 2025-07-13 | — | 12.77% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| microsoft | isa_server | 2000 | cpe:2.3:a:microsoft:isa_server:2000:*:*:*:*:*:*:* |