Is CVE-2021-28449 in the CISA KEV catalog?

No. CVE-2021-28449 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-28449?

CVE-2021-28449 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-28449?

CVE-2021-28449 has an EPSS score of 2.47% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-28449?

Install KB3017810 for Microsoft Excel 2010 Service Pack 2. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2021-28449

HIGHEPSS 83th pctl

7.8

CVSS v3

NVD

Description

Microsoft Office Remote Code Execution Vulnerability

How to fix

Remediation Available

Microsoft Excel 2010 Service Pack 2Microsoft

Install:KB3017810Microsoft

Microsoft Excel 2013 RT Service Pack 1Microsoft

Install:KB4504735

Microsoft Excel 2013 Service Pack 1Microsoft

Install:KB4504735Microsoft

Microsoft Excel 2016Microsoft

Install:KB4504721Microsoft

Microsoft Office 2010 Service Pack 2Microsoft

Install:KB2553491Microsoft

Install:KB2589361Microsoft

Install:KB4504738Microsoft

Microsoft Office 2013 RT Service Pack 1Microsoft

Install:KB4504726

Microsoft Office 2013 Service Pack 1Microsoft

Install:KB4504726Microsoft

Install:KB3178643Microsoft

Install:KB3178639Microsoft

Microsoft Office 2016Microsoft

Install:KB4504722Microsoft

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.47%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Patch1

portal.msrc.microsoft.com

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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.