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CISA KEV · Known exploitedHigh

CVE-2019-1297

Microsoft Excel

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory, aka 'Microsoft Excel Remote Code Execution Vulnerability'.

CVSS
8.8
EPSS
21.8%
97.4% percentile
CISA KEV
Listed
Published
2019.09.12
PRIORITY ASSESSMENT

Immediate review

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

Known exploitationConfirmed by CISA KEV
Exploit probability21.8%
Technical severityCVSS 8.8

Vulnerability overview

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory, aka 'Microsoft Excel Remote Code Execution Vulnerability'.

Affected product and versions

Product
Microsoft Excel
Affected versions
2010 Service Pack 2 (32-bit editions), 2010 Service Pack 2 (64-bit editions), 2013 Service Pack 1 (32-bit editions), 2013 Service Pack 1 (64-bit editions), 2013 RT Service Pack 1, 2016 (32-bit edition), 2016 (64-bit edition), 2016 for Mac, 2019 for 32-bit editions, 2019 for 64-bit editions, 2019 for Mac, 32-bit Systems, 64-bit Systems, 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
CISA required action

Apply updates per vendor instructions.

Due date: 2022.03.17
  1. 1
    Identify

    Confirm that Microsoft Excel 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:R/S:U/C:H/I:H/A:H
CWE
Not available
KEV added
2022.03.03
Ransomware use
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