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Vulnerabilities

Vulnerability · CVE-2026-42832

Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.

Published May 12, 2026 · catalog updated Jun 17, 2026 · Improper access control in

Check if you run it

No confirmed exploitation is on record for CVE-2026-42832. EPSS is 0.31%. Act only if a listed version of Improper access control in is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Improper access control in).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.31%
Remediation
Advisory link
Affected products
cpe microsoft/excel · cpe microsoft/office · cpe microsoft/office long term servicing channel · cpe microsoft/word

Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/excelversion unspecified
  • cpe microsoft/office2024
  • cpe microsoft/office long term servicing channel2021
  • cpe microsoft/wordversion unspecified

How to fix CVE-2026-42832

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-42832. EPSS is 0.31%. Act only if a listed version of Improper access control in is installed.

Which versions are affected?

Compare what you have installed with microsoft/office long term servicing channel 2021. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-284: Improper Access Control. EPSS 0.31%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 12, 2026 · NIST NVD

    Detected

    Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.

  2. Jun 17, 2026 · NIST NVD

    Updated

    Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.

Sources

  • CVE.orgVulnerability recordCVE-2026-42832

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-42832

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-42832

    Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.