CISA KEV · Known exploitedMedium

CVE-2021-27059

Microsoft Office

CVE-2021-27059 affects Microsoft Office. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

CVSS
6.5
EPSS
3.18%
86.8% percentile
CISA KEV
Listed
Published
2021.03.12
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability3.18%
Technical severityCVSS 6.5

Vulnerability overview

CVE-2021-27059 affects Microsoft Office. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

Affected product and versions

Product
Microsoft Office
Affected versions
16.0.0, 13.0.0.0, 15.0.0, 2010, 2013, 2016
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2021.11.17
  1. 1
    Identify

    Confirm that Microsoft Office and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
CWE
Not available
KEV added
2021.11.03
Ransomware use
미확인
CVE-2021-27059 — Microsoft Office | SECUFOCUS NOW