CVE-2021-28455

27

FAUCET Score

CVE-2021-28455 is a remote code execution vulnerability affecting the Microsoft Jet Red Database Engine and Access Connectivity Engine, impacting a wide range of Microsoft products including Windows, Office, and Microsoft 365 Apps. With a CVSS score of 8.8 (HIGH), this vulnerability allows an authenticated attacker to execute arbitrary code with high impact on confidentiality, integrity, and availability, requiring low privileges and no user interaction. While the vulnerability is not listed in CISA's KEV catalog and no public exploit code is readily available (Metasploit, Nuclei, ExploitDB), it has received some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:a:microsoft:365_apps:-::::enterprise:::
		2013CPE matchmatch criteria	cpe:2.3:a:microsoft:office:2013:sp1::::::
		2013CPE matchmatch criteria	cpe:2.3:a:microsoft:office:2013:sp1:::rt:::*
		2016CPE matchmatch criteria	cpe:2.3:a:microsoft:office:2016:::::::*
		2019CPE matchmatch criteria	cpe:2.3:a:microsoft:office:2019:::::::*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

2.8

Impact Score

5.9

CvssVersion

3.1

Exploit Intelligence

EPSS Score

2.12%

Probability of exploitation in next 30 days

EPSS Percentile

80.0%

Percentile rank of EPSS score among Peer Group

As of 2026-07-28

Model: v2026.06.15

This CVE's current EPSS score of 0.0212 is in the 78th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (58)

microsoftpatch availablevia nvd_reference

microsoftpatch availablevia msrc

Product: Microsoft Access 2013 Service Pack 1 (32-bit editions)Fixed in: 15.0.5353.1000

microsoftpatch availablevia msrc

Product: Microsoft Access 2013 Service Pack 1 (64-bit editions)Fixed in: 15.0.5353.1000

microsoftpatch availablevia msrc

Product: Microsoft Office 2019 for 32-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft Office 2019 for 64-bit editionsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft 365 Apps for Enterprise for 32-bit SystemsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft 365 Apps for Enterprise for 64-bit SystemsFixed in: https://aka.ms/OfficeSecurityReleases

microsoftpatch availablevia msrc

Product: Microsoft Office 2016 (32-bit edition)Fixed in: 16.0.5161.1001

microsoftpatch availablevia msrc

Product: Microsoft Office 2016 (64-bit edition)Fixed in: 16.0.5161.1001

microsoftpatch availablevia msrc

Product: Microsoft Access 2016 (32-bit edition)

microsoftpatch availablevia msrc

Product: Microsoft Access 2016 (64-bit edition)

microsoftpatch availablevia msrc

Product: Microsoft Office 2013 RT Service Pack 1Fixed in: 15.0.5345.1001

microsoftpatch availablevia msrc

Product: Microsoft Office 2013 Service Pack 1 (32-bit editions)Fixed in: 15.0.5345.1001

microsoftpatch availablevia msrc

Product: Microsoft Office 2013 Service Pack 1 (64-bit editions)Fixed in: 15.0.5345.1001

microsoftpatch availablevia msrc

Product: Windows 10 Version 1803 for 32-bit SystemsFixed in: 10.0.17134.2207

microsoftpatch availablevia msrc

Product: Windows 10 Version 1803 for x64-based SystemsFixed in: 10.0.17134.2207

microsoftpatch availablevia msrc

Product: Windows 10 Version 1803 for ARM64-based SystemsFixed in: 10.0.17134.2207

microsoftpatch availablevia msrc

Product: Windows 10 Version 1809 for 32-bit SystemsFixed in: 10.0.17763.1935

microsoftpatch availablevia msrc

Product: Windows 10 Version 1809 for x64-based SystemsFixed in: 10.0.17763.1935

microsoftpatch availablevia msrc

Product: Windows 10 Version 1809 for ARM64-based SystemsFixed in: 10.0.17763.1935

microsoftpatch availablevia msrc

Product: Windows Server 2019Fixed in: 10.0.17763.1935

microsoftpatch availablevia msrc

Product: Windows Server 2019 (Server Core installation)Fixed in: 10.0.17763.1935

microsoftpatch availablevia msrc

Product: Windows 10 Version 1909 for 32-bit SystemsFixed in: 10.0.18363.1556

microsoftpatch availablevia msrc

Product: Windows 10 Version 1909 for x64-based SystemsFixed in: 10.0.18363.1556

microsoftpatch availablevia msrc

Product: Windows 10 Version 1909 for ARM64-based SystemsFixed in: 10.0.18363.1556

microsoftpatch availablevia msrc

Product: Windows Server, version 1909 (Server Core installation)Fixed in: 10.0.18363.1556

microsoftpatch availablevia msrc

Product: Windows 10 Version 2004 for 32-bit SystemsFixed in: 10.0.19041.982

microsoftpatch availablevia msrc

Product: Windows 10 Version 2004 for ARM64-based SystemsFixed in: 10.0.19041.982

microsoftpatch availablevia msrc

Product: Windows 10 Version 2004 for x64-based SystemsFixed in: 10.0.19041.982

microsoftpatch availablevia msrc

Product: Windows Server, version 2004 (Server Core installation)Fixed in: 10.0.19041.982

microsoftpatch availablevia msrc

Product: Windows 10 Version 20H2 for 32-bit SystemsFixed in: 10.0.19042.982

microsoftpatch availablevia msrc

Product: Windows 10 Version 20H2 for ARM64-based SystemsFixed in: 10.0.19042.982

microsoftpatch availablevia msrc

Product: Windows Server, version 20H2 (Server Core Installation)Fixed in: 10.0.19042.982

microsoftpatch availablevia msrc

Product: Windows 10 for 32-bit SystemsFixed in: 10.0.10240.18931

microsoftpatch availablevia msrc

Product: Windows 10 for x64-based SystemsFixed in: 10.0.10240.18931

microsoftpatch availablevia msrc

Product: Windows 10 Version 1607 for 32-bit SystemsFixed in: 10.0.14393.4401

microsoftpatch availablevia msrc

Product: Windows 10 Version 1607 for x64-based SystemsFixed in: 10.0.14393.4401

microsoftpatch availablevia msrc

Product: Windows Server 2016Fixed in: 10.0.14393.4401

microsoftpatch availablevia msrc

Product: Windows Server 2016 (Server Core installation)Fixed in: 10.0.14393.4401

microsoftpatch availablevia msrc

Product: Windows 7 for 32-bit Systems Service Pack 1Fixed in: 6.1.7601.24597

microsoftpatch availablevia msrc

Product: Windows 7 for x64-based Systems Service Pack 1Fixed in: 6.1.7601.24597

microsoftpatch availablevia msrc

Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1Fixed in: 6.1.7601.24597

microsoftpatch availablevia msrc

Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)Fixed in: 6.1.7601.24597

microsoftpatch availablevia msrc

Product: Windows 7 for 32-bit Systems Service Pack 1Fixed in: 6.1.7601.24598

microsoftpatch availablevia msrc

Product: Windows 7 for x64-based Systems Service Pack 1Fixed in: 6.1.7601.24598

microsoftpatch availablevia msrc

Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1Fixed in: 6.1.7601.24598

microsoftpatch availablevia msrc

Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)Fixed in: 6.1.7601.24598

microsoftpatch availablevia msrc

Product: Windows 8.1 for 32-bit systemsFixed in: 6.3.9600.20017

microsoftpatch availablevia msrc

Product: Windows 8.1 for x64-based systemsFixed in: 6.3.9600.20017

microsoftpatch availablevia msrc

Product: Windows Server 2012 R2Fixed in: 6.3.9600.20017

microsoftpatch availablevia msrc

Product: Windows Server 2012 R2 (Server Core installation)Fixed in: 6.3.9600.20017

microsoftpatch availablevia msrc

Product: Windows RT 8.1Fixed in: 6.3.9600.20017

microsoftpatch availablevia msrc

Product: Windows Server 2008 for 32-bit Systems Service Pack 2Fixed in: 6.0.6003.21117

microsoftpatch availablevia msrc

Product: Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)Fixed in: 6.0.6003.21117

microsoftpatch availablevia msrc

Product: Windows Server 2008 for x64-based Systems Service Pack 2Fixed in: 6.0.6003.21117

microsoftpatch availablevia msrc

Product: Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)Fixed in: 6.0.6003.21117

microsoftpatch availablevia msrc

Product: Windows Server 2012Fixed in: 6.2.9200.23347

microsoftpatch availablevia msrc

Product: Windows Server 2012 (Server Core installation)Fixed in: 6.2.9200.23347

Vendor Advisories (1)

microsoft2021-May/CVE-2021-28455Important

Microsoft Jet Red Database Engine and Access Connectivity Engine Remote Code Execution Vulnerability

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2021-28455

PatchVendor Advisory