CVE-2021-42292
Microsoft Excel Security Feature Bypass Vulnerability
- High 7.8
- Exploited: added to CISA KEV 17 Nov 2021
Description
Microsoft Excel Security Feature Bypass Vulnerability
Key facts
- Published
- 10 Nov 2021
- Last changed
- 19 Aug 2026
- Assigned by
- microsoft
- KEV added
- 17 Nov 2021
- KEV fix due
- 1 Dec 2021
- EPSS
- 43.005% likely to be exploited in the next 30 days, higher than 98.741% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.8CVSS 3.1, Highfrom the CNA (microsoft)
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
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
|
| Microsoft | Microsoft Excel 2013 Service Pack 1 |
|
| Microsoft | Microsoft Excel 2016 |
|
| Microsoft | Microsoft Office 2013 Service Pack 1 |
|
| Microsoft | Microsoft Office 2016 |
|
| Microsoft | Microsoft Office 2019 |
|
| Microsoft | Microsoft Office 2019 for Mac |
|
| Microsoft | Microsoft Office LTSC 2021 |
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
|
Timeline
- 10 Nov 2021 Published
- 17 Nov 2021 CVE-2021-42292 added to CISA KEV
- 17 Nov 2021 Added to the CISA KEV catalogue