Is CVE-2021-27056 in the CISA KEV catalog?

No. CVE-2021-27056 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-27056?

CVE-2021-27056 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2021-27056?

CVE-2021-27056 has an EPSS score of 3.10% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-27056?

Install KB4504702 for Microsoft PowerPoint 2010 Service Pack 2. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-27056

HIGHEPSS 86th pctl

7.8

CVSS v3

NVD

Description

Microsoft PowerPoint Remote Code Execution Vulnerability

How to fix

Remediation Available

Microsoft PowerPoint 2010 Service Pack 2Microsoft

Install:KB4504702Microsoft

Microsoft PowerPoint 2013 RT Service Pack 1Microsoft

Install:KB4493227

Microsoft PowerPoint 2013 Service Pack 1Microsoft

Install:KB4493227Microsoft

Microsoft PowerPoint 2016Microsoft

Install:KB4493224Microsoft

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

3.10%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.