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High 7.8Known exploited (CISA KEV)Published Nov 10, 2021
CVE-2021-42292Microsoft Excel Security Feature Bypass Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft 365 Apps for Enterprise and 12 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Nov 17, 2021; federal agencies had to remediate by Dec 1, 2021. Treat that date as your deadline.
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Microsoft Excel Security Feature Bypass Vulnerability
- CVSS
- 7.8 HIGH (v3.1, CNA)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
- Weakness (CWE)
- Not given
- Known exploited
- Added to CISA KEV Nov 17, 2021; federal remediation due Dec 1, 2021Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 43.00% (percentile 99)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Microsoft 365 Apps for Enterprise microsoft:365_apps_for_enterprise (from the name) | from 16.0.1 before https://aka.ms/OfficeSecurityReleases | CNA record |
Microsoft Microsoft Excel 2013 Service Pack 1 microsoft:excel_2013_service_pack_1 (from the name) | from 15.0.0.0 before 15.0.5397.1001 | CNA record |
Microsoft Microsoft Excel 2016 microsoft:excel_2016 (from the name) | from 16.0.0.0 before 16.0.5239.1001 | CNA record |
Microsoft Microsoft Office 2013 Service Pack 1 microsoft:office_2013_service_pack_1 (from the name) | from 15.0.0 before 15.0.5397.1001 | CNA record |
Microsoft Microsoft Office 2016 microsoft:office_2016 (from the name) | from 16.0.0 before 16.0.5239.1001 | CNA record |
Microsoft Microsoft Office 2019 microsoft:office_2019 (from the name) | from 19.0.0 before https://aka.ms/OfficeSecurityReleases | CNA record |
Microsoft Microsoft Office 2019 for Mac microsoft:office_2019_for_mac (from the name) | from 16.0.0 before 16.55.21111400 | CNA record |
Microsoft Microsoft Office LTSC 2021 microsoft:office_ltsc_2021 (from the name) | from 16.0.1 before https://aka.ms/OfficeSecurityReleases | CNA record |
Microsoft Microsoft Office LTSC for Mac 2021 microsoft:office_ltsc_for_mac_2021 (from the name) | from 16.0.1 before 16.55.21111400 | CNA record |
microsoft 365_apps microsoft:365_apps | all versions | NVD |
microsoft excel microsoft:excel | 2013; 2013; 2016; 2016 | NVD |
microsoft office microsoft:office | 2013; 2013; 2019 | NVD |
microsoft office_2016 microsoft:office_2016 | all versions; all versions | NVD |
microsoft office_2019 microsoft:office_2019 | all versions; all versions | NVD |
microsoft office_2021 microsoft:office_2021 | all versions; all versions; all versions | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42292vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42292patch, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42292us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.