Sep 2023: Microsoft Excel Information Disclosure Vulnerability
CVE-2023-36766 Published on September 12, 2023

Microsoft Excel Information Disclosure Vulnerability
Microsoft Excel Information Disclosure Vulnerability

Vendor Advisory NVD

Weakness Type

Out-of-bounds Read

The software reads data past the end, or before the beginning, of the intended buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.


Products Associated with CVE-2023-36766

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Microsoft Excel
 
Microsoft Office Online Server
 
Microsoft Office
 
Microsoft 365 Apps
 
Microsoft Office Long Term Servicing Channel
 

Affected Versions

Microsoft Office 2019: Microsoft Office 2019 for Mac: Microsoft Office Online Server: Microsoft 365 Apps for Enterprise: Microsoft Office LTSC for Mac 2021: Microsoft Office LTSC 2021: Microsoft Excel 2016: Microsoft Excel 2013 Service Pack 1:

Exploit Probability

EPSS
0.38%
Percentile
59.16%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.