A bug in the HTML parser in a certain Microsoft HTML library, as used in various third party products, may allow remote attackers to cause a denial of service via certain strings, as reported in GFI MailEssentials for Exchange 9 and 10, and GFI MailSecurity for Exchange 8, which causes emails to remain in IIS or Exchange mail queues.
Conclusion & alert: CVE-2004-1312 is rated High Risk (70.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.47%). Core evidence: EPSS rose +1.48% over the last day, indicating growing attacker interest. 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 | 0.99% | 2.47% | +1.48% |
| 2 | 2025-03-30 | 1.54% | 0.99% | -0.55% |
| 3 | 2025-03-29 | — | 1.54% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| gfi | mailessentials | 9.0 | cpe:2.3:a:gfi:mailessentials:9.0:*:exchange_smtp:*:*:*:*:* |
| gfi | mailessentials | 10.0 | cpe:2.3:a:gfi:mailessentials:10.0:*:exchange_smtp:*:*:*:*:* |
| gfi | mailessentials | 10.1 | cpe:2.3:a:gfi:mailessentials:10.1:*:exchange_smtp:*:*:*:*:* |
| gfi | mailsecurity | 8.0 | cpe:2.3:a:gfi:mailsecurity:8.0:*:exchange_smtp:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://kbase.gfi.com/showarticle.asp?id=KBID002249 | Patch Vendor Advisory |
| http://secunia.com/advisories/13708 | |
| http://www.csis.dk/default.asp?m=1&a=194 | Vendor Advisory |
| http://www.securityfocus.com/bid/12148 |