hwpapp.dll in Hangul Word Processor allows remote attackers to execute arbitrary code via a crafted heap spray, and by leveraging a "type confusion" via an HWPX file containing a crafted para text tag.
Conclusion & alert: CVE-2015-6585 is rated Moderate Risk (58.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.38%). 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 | 2026-03-25 | 1.81% | 1.38% | -0.43% |
| 2 | 2025-04-30 | 0.33% | 1.81% | +1.48% |
| 3 | 2025-03-30 | — | 0.33% | — |
Full EPSS history (13 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.0 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| hancom | hangul_word_processor | 2014 | cpe:2.3:a:hancom:hangul_word_processor:2014:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| http://www.hancom.com/cs_center/csDownload.do | Vendor Advisory |
| http://www.securityfocus.com/bid/76694 | Third Party Advisory VDB Entry |
| https://www.fireeye.com/blog/threat-research/2015/09/zero-day_hwp_exploit.html | Third Party Advisory |
| https://www.fireeye.com/content/dam/fireeye-www/global/en/blog/threat-research/FireEye_HWP_ZeroDay.pdf | Third Party Advisory |