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CVE-2018-5201

20
FAUCET Score

CVE-2018-5201 describes a heap overflow vulnerability in multiple versions of Hancom Office products, including 2018, NEO, 2014, and 2010. This flaw, triggered by handling malformed Compound Files in documents, can lead to program crashes or denial of service. Rated Medium (CVSS 5.5), it requires user interaction (UI:R) and local access (AV:L) to exploit, with the primary impact being availability (A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.5.8.1724CPE matchmatch criteria
cpe:2.3:a:hancom:hancom_office_2010:*:*:*:*:*:*:*:*
<= 9.1.1.4540CPE matchmatch criteria
cpe:2.3:a:hancom:hancom_office_2014:*:*:*:*:*:*:*:*
<= 10.0.0.8214CPE matchmatch criteria
cpe:2.3:a:hancom:hancom_office_2018:*:*:*:*:*:*:*:*
<= 9.6.1.10472CPE matchmatch criteria
cpe:2.3:a:hancom:hancom_office_neo:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 54th percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

boho.or.kr / krcert/secNoticeView.do
PatchThird Party Advisory