CVE-2026-123395: Microsoft Office Excel Information Disclosure Vulnerability
Published Nov 10, 2026
·Updated
Improper control of generation of code ('code injection') in Microsoft Office Excel allows an authorized attacker to disclose information locally.
Other sources
Microsoft Office Excel Information Disclosure Vulnerability
— Microsoft
Affected Software
7 affected componentsFixes available
Microsoft Office LTSC 2021<16.0.14334.21048
16.0.14334.21048
Microsoft Office LTSC 2024<16.0.17932.21140
16.0.17932.21140
Microsoft Office LTSC 2021<16.0.14334.21048
16.0.14334.21048
Microsoft Office LTSC 2024<16.0.17932.21140
16.0.17932.21140
Microsoft Office LTSC for Mac 2021<16.115.26110837
16.115.26110837
Microsoft Office 365 for Mac<16.115.26110837
16.115.26110837
Microsoft Office LTSC for Mac 2024<16.115.26110837
16.115.26110837
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.21140 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.21048 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.115.26110837
Event History
Nov 10, 2026
CVE Published
via Microsoft·04:00 PM
Data Sourced
via Microsoft·04:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·04:00 PM
Affected Software
CVE Published
via MITRE·06:22 PM
Data Sourced
via MITRE·06:22 PM
DescriptionSeverity
Data Sourced
via NVD·07:20 PM
DescriptionSeverityWeakness