Is CVE-2021-27057 in the CISA KEV catalog?

No. CVE-2021-27057 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-27057?

CVE-2021-27057 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-27057?

CVE-2021-27057 has an EPSS score of 3.12% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-27057?

Install KB4504707 for Microsoft Excel 2010 Service Pack 2. Fixes are available for 10 affected products.

CVE & CISA-KEV Catalog

CVE-2021-27057

HIGHEPSS 86th 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:KB4504707Microsoft

Microsoft Excel 2013 RT Service Pack 1Microsoft

Install:KB4493239

Microsoft Excel 2013 Service Pack 1Microsoft

Install:KB4493239Microsoft

Microsoft Excel 2016Microsoft

Install:KB4493233Microsoft

Microsoft Office 2010 Service Pack 2Microsoft

Install:KB4493214Microsoft

Microsoft Office 2013 RT Service Pack 1Microsoft

Install:KB4493203

Microsoft Office 2013 Service Pack 1Microsoft

Install:KB4493203Microsoft

Microsoft Office 2016Microsoft

Install:KB4493200Microsoft

Microsoft Office Online ServerMicrosoft

Install:KB4493229Microsoft

Microsoft Office Web Apps 2013 Service Pack 1Microsoft

Install:KB4493234Microsoft

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

3.12%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Patch1

portal.msrc.microsoft.com

Third-Party Advisory1

zerodayinitiative.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.