Description
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
patch
Microsoft Excel Information Disclosure Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45455
Scores
CVSS v3
3.3
EPSS
0.0030
EPSS Percentile
21.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-125
Status
published
Products (9)
Microsoft/Microsoft 365 Apps for Enterprise
16.0.1 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Excel 2016
16.0.0.0 - 16.0.5556.1001
Microsoft/Microsoft Office 2019
19.0.0 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office 365 for Mac
-
Microsoft/Microsoft Office LTSC 2021
16.0.1 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office LTSC 2024
16.0.0 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office LTSC for Mac 2021
-
Microsoft/Microsoft Office LTSC for Mac 2024
-
Microsoft/Office Online Server
16.0.0.0 - 16.0.10417.20137
Published
Jun 09, 2026
Tracked Since
Jun 09, 2026