What is CVE-2020-7853?

CVE-2020-7853 is a medium-severity vulnerability in Microsoft Windows, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2021-03-24.

How severe is CVE-2020-7853?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Out-of-bounds Read in Microsoft Windows

CVE-2020-7853

An outbound read/write vulnerability exists in XPLATFORM that does not check offset input ranges, allowing out-of-range data to be read. An attacker can exploit arbitrary code execution.

Vulnerability class: Buffer Overflow

Published 2021-03-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Microsoft Windows
Tobesoft Xplatform — versions unspecified

Weakness classification (CWE)

References

www.krcert.or.kr/krcert/secNoticeView.do (Third Party Advisory)

Frequently asked questions

What is CVE-2020-7853?: CVE-2020-7853 is a medium-severity vulnerability in Microsoft Windows, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2021-03-24.
How severe is CVE-2020-7853?: Medium severity. CVSS v3 base score is 5.5 out of 10.