CVE-2021-27059

High (7.6) in Microsoft Office. In CISA KEV since 2021-11-03. EPSS 6.1% chance of exploitation in the next 30 days.

EPSS

6.1% chance of exploitation in the next 30 days; higher than 93% of CVEs (scores of 2026-10-31)

CISA KEV

listed 2021-11-03, due 2021-11-17

Published

2021-03-11

Modified

2026-08-19

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:office
• microsoft:office_2016

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27059
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27059
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27059

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