CVE-2025-29867
Type confusion in Hancom Office enables file content injection and RCE
Is CVE-2025-29867 being exploited?
Not confirmed. CVE-2025-29867 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.25% probability of exploitation in the next 30 days.
How severe is CVE-2025-29867?
CVE-2025-29867 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2025-29867?
Yes. A fix has been recorded for CVE-2025-29867. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-29867 affect?
CVE-2025-29867 affects Hancom Office 2018 (pre 10.0.0.12681), Hancom Office 2020 (pre 11.0.0.8916), Hancom Office 2022 (pre 12.0.0.4426), Hancom Office 2024 (pre 13.0.0.3050). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-29867?
Update to latest Hancom Office builds; verify patch status
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via crafted file content due to type confusion; attacker can run arbitrary code on affected host.
Patch when possible
- affected< 10.0.0.12681
- affected< 11.0.0.8916
- affected< 12.0.0.4426
- affected< 13.0.0.3050
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.