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TI-2022-14904 Aliases CVE-2022-33896GHSA-9w8p-gv6j-vj3w

A buffer underflow vulnerability exists in the way Hword of Hancom Office 2020 version…

Priority HIGH 69CWE-124Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A buffer underflow vulnerability exists in the way Hword of Hancom Office 2020 version 11.0.0.5357 parses XML-based office files. A specially-crafted malformed file can cause memory corruption by using memory before buffer start, which can lead to code execution. A victim would need to access a malicious file to trigger this vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00528 44th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
HancomHancom Office 2020Hancom Office 2020 11.0.0.5357—No fix listedCNA
  • Hancom Office 2020 VendorHancom Affected Hancom Office 2020 11.0.0.5357 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:hancom:hancom_office_2020:11.0.0.5357:*:*:*:*:*:*:*11.0.0.5357VulnerableHancom
  • cpe:2.3:a:hancom:hancom_office_2020:11.0.0.5357:*:*:*:*:*:*:* Versions 11.0.0.5357 Vulnerable ·Hancom

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-33896
  2. 2026-10-03 Alias added: GHSA-9w8p-gv6j-vj3w

References

Exploit 1

  • TI-2023-15823 Use after free in Hancom Office 2020 CVSS 3.1HIGH 8.8
  • TI-2021-05003 Heap-based buffer overflow in Hancom CVSS 3.1HIGH 7.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences