Important CVSS 5.5 EPSS 0.00558 2025-11 archive

Executive Summary

Exposure of sensitive information to an unauthorized actor in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

Overview

5.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Information Disclosure
Released Nov 11 2025
Last Updated Nov 11 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00558 — 0.42025 percentile

CVSS Vector

ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 4.8

EPSS Score

0.00558
probability of exploitation in the next 30 days
0.42025 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

10 affected products
Product KB Article Severity Impact Restart Required
Microsoft 365 Apps for Enterprise for 32-bit Systems Click to Run (Security Update) Important Information Disclosure No
Microsoft 365 Apps for Enterprise for 64-bit Systems Click to Run (Security Update) Important Information Disclosure No
Microsoft Excel 2016 (32-bit edition) 5002811 (Security Update) Important Information Disclosure Maybe
Microsoft Excel 2016 (64-bit edition) 5002811 (Security Update) Important Information Disclosure Maybe
Microsoft Office 2019 for 32-bit editions Click to Run (Security Update) Important Information Disclosure No
Microsoft Office 2019 for 64-bit editions Click to Run (Security Update) Important Information Disclosure No
Microsoft Office LTSC 2021 for 32-bit editions Click to Run (Security Update) Important Information Disclosure No
Microsoft Office LTSC 2021 for 64-bit editions Click to Run (Security Update) Important Information Disclosure No
Microsoft Office LTSC 2024 for 32-bit editions Click to Run (Security Update) Important Information Disclosure No
Microsoft Office LTSC 2024 for 64-bit editions Click to Run (Security Update) Important Information Disclosure No

Patches

2 patches
Article Type Restart
Click to Run Security Update No
5002811 Security Update Maybe

Known Exploits

Acknowledgments

Felix B., Felix B., Felix B.