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CVE-2020-0901

Microsoft Microsoft 365 Apps for Enterprise, Microsoft Excel 2010 Service Pack 2, Microsoft Excel 2013 Service Pack 1

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than us...

CVSS
9.8
EPSS
4.31%
90.5% percentile
CISA KEV
Not listed
Published
2020.05.22
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability4.31%
Technical severityCVSS 9.8

Vulnerability overview

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than us...

Affected product and versions

Product
Microsoft Microsoft 365 Apps for Enterprise, Microsoft Excel 2010 Service Pack 2, Microsoft Excel 2013 Service Pack 1
Affected versions
>= 16.0.1 < https://aka.ms/OfficeSecurityReleases, >= 13.0.0.0 < publication, >= 15.0.0.0 < publication, >= 16.0.0.0 < publication, >= 16.0.0 < publication, >= 19.0.0 < https://aka.ms/OfficeSecurityReleases, 2010, 2013, 2016, 2019
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Microsoft Microsoft 365 Apps for Enterprise, Microsoft Excel 2010 Service Pack 2, Microsoft Excel 2013 Service Pack 1 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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available