What is CVE-2015-6585?

CVE-2015-6585 is a high-severity vulnerability in Hancom Hangul Word Processor, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-25.

How severe is CVE-2015-6585?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Hancom Hangul Word Processor

CVE-2015-6585

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.

Vulnerability class: Buffer Overflow

Published 2017-07-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.025 (84.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Hancom Hangul Word Processor — versions 2014

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

www.securityfocus.com/bid/76694 (VDB Entry, Third Party Advisory, vdb-entry)
www.fireeye.com/blog/threat-research/2015/09/zero-day_hwp_exploit.html (Third Party Advisory)
www.hancom.com/cs_center/csDownload.do (Vendor Advisory)
www.fireeye.com/content/dam/fireeye-www/global/en/blog/threat-research/FireEye_… (Third Party Advisory)

Frequently asked questions

What is CVE-2015-6585?: CVE-2015-6585 is a high-severity vulnerability in Hancom Hangul Word Processor, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-07-25.
How severe is CVE-2015-6585?: High severity. CVSS v3 base score is 7.8 out of 10.