CVE-2021-42292

High (7.8) in Microsoft Office. In CISA KEV since 2021-11-17. EPSS 43% chance of exploitation in the next 30 days.

EPSS

43% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)

CISA KEV

listed 2021-11-17, due 2021-12-01

Published

2021-11-10

Modified

2026-08-19

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:365_apps
• microsoft:excel
• microsoft:office
• microsoft:office_2016
• microsoft:office_2019
• microsoft:office_2021

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42292
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42292
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42292

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