CVE-2021-27059
highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.061 · 93 %ileEURUUSadded 2021-11-03remediate by 2021-11-17
required action Apply updates per vendor instructions.
EPSS · scored 2026-10-27
Microsoft Office Remote Code Execution Vulnerability
Microsoft Office Remote Code Execution Vulnerability
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
ATT&CK techniques
ATT&CK techniques this enables or maps to.
affected products (10)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27059cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-27059cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27059cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27059enisa_euvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27059PatchVendor Advisorynvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27059PatchVendor Advisorynvd
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27059US Government Resourcenvd
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