What is CVE-2021-21958?

CVE-2021-21958 is a high-severity vulnerability in Hancom Hancom_office_2020, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2022-02-16.

How severe is CVE-2021-21958?

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

Buffer overflow in Hancom Hancom_office_2020

CVE-2021-21958

A heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll functionality of Hancom Office 2020 11.0.0.2353. A specially-crafted malformed file can lead to memory corruption and potential arbitrary code execution. An attack…

Vulnerability class: Buffer Overflow

EPSS: 0.011 (62.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Hancom Hancom_office_2020 — versions 11.0.0.2353
N/a Hancom — versions Hancom Office 2020 11.0.0.2353

Weakness classification (CWE)

References

talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC)
nvd@nist.gov (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-21958?: CVE-2021-21958 is a high-severity vulnerability in Hancom Hancom_office_2020, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2022-02-16.
How severe is CVE-2021-21958?: High severity. CVSS v3 base score is 7.8 out of 10.