What is CVE-2020-7821?

CVE-2020-7821 is a high-severity vulnerability in Microsoft Windows, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2020-07-02.

How severe is CVE-2020-7821?

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

Improper input validation in Microsoft Windows

CVE-2020-7821

Nexacro14/17 ExtCommonApiV13 Library under 2019.9.6 version contain a vulnerability that could allow remote attacker to execute arbitrary code by modifying the value of registry path. This can be leveraged for code execution by rebooting the victim’s PC

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2020-07-02 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.016 (75.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Microsoft Windows
Nexaweb Nexacro 14
Nexaweb Nexacro 17
Tobesoft Nexacro14/17 Excommonapiv13 — versions 2019.9.6

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

support.tobesoft.co.kr/Support/index.html (Third Party Advisory)
www.krcert.or.kr/krcert/secNoticeView.do (Third Party Advisory)

Frequently asked questions

What is CVE-2020-7821?: CVE-2020-7821 is a high-severity vulnerability in Microsoft Windows, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2020-07-02.
How severe is CVE-2020-7821?: High severity. CVSS v3 base score is 7.8 out of 10.