01 Record
CVE-2021-42292
Microsoft Excel Security Feature Bypass Vulnerability
HighKEVPUBLISHEDCNA: microsoft
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
02 Description
Microsoft Excel Security Feature Bypass Vulnerability
03 Exploitation and scoring
- Exploitation
- Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2021-11-17. Federal remediation due 2021-12-01.
- SSVC decision
- ExploitationactiveCISA reports credible evidence of active exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 43.00% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 98.6% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-08-19.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-11-10 00:47Z4 YR AGO
- Last updated
- 2026-08-19 16:27Z2 MO AGO
- Reserved
- 2021-10-12
- Assigning CNA
- microsoft
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.8)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
- Weaknesses
- No CWE assigned
- Data version
- 5.2
- Document digest
- 1f645f70e91f9f614066cb7fac048bc06fda7d9c0a9ce248b9d0753cebd67a54
05 Affected products
VendorProductVersionsPlatforms
MicrosoftMicrosoft 365 Apps for Enterprise16.0.1 to < https://aka.ms/OfficeSecurityReleases32-bit Systems, x64-based Systems
MicrosoftMicrosoft Excel 2013 Service Pack 115.0.0.0 to < 15.0.5397.100132-bit Systems, ARM64-based Systems, x64-based Systems
MicrosoftMicrosoft Office 2013 Service Pack 115.0.0 to < 15.0.5397.100132-bit Systems, ARM64-based Systems, x64-based Systems
MicrosoftMicrosoft Office 201919.0.0 to < https://aka.ms/OfficeSecurityReleases32-bit Systems, x64-based Systems
MicrosoftMicrosoft Office LTSC 202116.0.1 to < https://aka.ms/OfficeSecurityReleases32-bit Systems, x64-based Systems
06 References
- msrc.microsoft.comMicrosoft Excel Security Feature Bypass Vulnerabilityhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42292
- portal.msrc.microsoft.comhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42292
- www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42292