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High 7.6Known exploited (CISA KEV)Published Mar 11, 2021
CVE-2021-27059Microsoft Office Remote Code Execution Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft Office 2010 Service Pack 2 and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Nov 3, 2021; federal agencies had to remediate by Nov 17, 2021. Treat that date as your deadline.
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Microsoft Office Remote Code Execution Vulnerability
- CVSS
- 7.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
- Weakness (CWE)
- Not given
- Known exploited
- Added to CISA KEV Nov 3, 2021; federal remediation due Nov 17, 2021Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 6.08% (percentile 93)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Microsoft Office 2010 Service Pack 2 microsoft:office_2010_service_pack_2 (from the name) | from 13.0.0.0 before 14.0.7266.5000 | CNA record |
Microsoft Microsoft Office 2013 Service Pack 1 microsoft:office_2013_service_pack_1 (from the name) | from 15.0.0 before publication | CNA record |
Microsoft Microsoft Office 2016 microsoft:office_2016 (from the name) | from 16.0.0 before 16.0.5134.1000 | CNA record |
microsoft office microsoft:office | 2010; 2013; 2013 | NVD |
microsoft office_2016 microsoft:office_2016 | all versions; all versions | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27059vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-27059patch, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27059us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.