VDB

CVE-2026-55138

CVE-2026-55138 PUBLISHED CVSS 5.5 MEDIUM

Reported by microsoft · Published July 14, 2026

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

Risk Scores

CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Affected Products

VendorProductVersions
MicrosoftMicrosoft 365 Apps for Enterprise16.0.1
MicrosoftMicrosoft Excel 201616.0.0.0
MicrosoftMicrosoft Office 201919.0.0
MicrosoftMicrosoft Office 365 for Mac1.0.0
MicrosoftMicrosoft Office LTSC 202116.0.1
MicrosoftMicrosoft Office LTSC 202416.0.0
MicrosoftMicrosoft Office LTSC for Mac 202116.0.1
MicrosoftMicrosoft Office LTSC for Mac 202416.0.0
MicrosoftOffice Online Server16.0.0.0
MicrosoftMicrosoft Office LTSC 202416.0.0, 16.0.0, 16.0.0
microsoft365_apps16.0.1, 16.0.1, 16.0.1
microsoftoffice_202116.0.1, 16.0.0.0, 16.0.0.0
MicrosoftMicrosoft 365 Apps for Enterprise16.0.1, 16.0.1, 16.0.1
MicrosoftMicrosoft Office LTSC for Mac 202416.0.0, 16.0.0, 16.0.0
MicrosoftMicrosoft Excel 201616.0.0.0, 16.0.0.0, 16.0.0.0
MicrosoftMicrosoft Office LTSC for Mac 202116.0.1, 16.0.1, 16.0.1
MicrosoftMicrosoft Office LTSC 202116.0.1, 16.0.1, 16.0.1
microsoftoffice_3651.0.0, 1.0.0, 1.0.0
MicrosoftMicrosoft Office 201919.0.0, 19.0.0, 19.0.0
microsoftoffice_macos_202116.0.1, 16.0.1, 16.0.1

…and 6 more

Timeline

  • Jul 14, 2026 CVE Published
  • Jul 15, 2026 Coalition ESS Score
  • Jul 15, 2026 Security Advisory
  • Jul 15, 2026 CVE Updated
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