Is CVE-2021-28452 in the CISA KEV catalog?

No. CVE-2021-28452 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28452?

CVE-2021-28452 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2021-28452?

CVE-2021-28452 has an EPSS score of 1.29% (67th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28452?

Install KB4493185 for Microsoft Outlook 2010 Service Pack 2. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-28452

HIGH

7.1

CVSS v3

NVD

Description

Microsoft Outlook Memory Corruption Vulnerability

CWE-787Out-of-bounds Write

How to fix

Remediation Available

Microsoft Outlook 2010 Service Pack 2Microsoft

Install:KB4493185Microsoft

Microsoft Outlook 2013 RT Service Pack 1Microsoft

Install:KB4504733

Microsoft Outlook 2013 Service Pack 1Microsoft

Install:KB4504733Microsoft

Microsoft Outlook 2016Microsoft

Install:KB4504712Microsoft

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Exploit Intelligence

1.29%probability of exploitation in 30 days

67thpercentile

Moderate risk: more likely to be exploited than 67% of all known CVEs.

References

Patch1

portal.msrc.microsoft.com

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

Embed a live status badge for CVE-2021-28452

Markdown

[![CVE-2021-28452](https://tridentstack.com/cve/badge/CVE-2021-28452.svg)](https://tridentstack.com/cve/CVE-2021-28452)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-28452"><img src="https://tridentstack.com/cve/badge/CVE-2021-28452.svg" alt="CVE-2021-28452"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.