CVE-2021-26420

High (7.1) in microsoft. EPSS 3.0% chance of exploitation in the next 30 days.

EPSS

3.0% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)

Published

2021-06-08

Modified

2026-06-17

Record from

the NVD, synced 2026-10-19

Affected

• microsoft:sharepoint_enterprise_server
• microsoft:sharepoint_foundation
• microsoft:sharepoint_server

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26420
• https://www.zerodayinitiative.com/advisories/ZDI-21-755/
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26420
• https://www.zerodayinitiative.com/advisories/ZDI-21-755/

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