Type Confusion in Hancom Office - CVE-2025-29867
Published: January 29, 2026
Vulnerability identifier: #VU122113
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-29867
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error. A remote attacker can trick a victim to open a specially crafted DOC file, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Hancom Office
How to mitigate CVE-2025-29867
Install updates from vendor's website.
Hancom Office - update to 11.0.0.8916