CVE-2026-123395
Microsoft Office Excel Information Disclosure Vulnerability
CVE-2026-123395 is a medium vulnerability (CVSS 5.9) in Microsoft 365 Apps For Enterprise, published November 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. No source names a fixed version.
- Severity
- 5.9 MediumCVSS 3.1, CVE List
- Exploit chance
- 0.37%EPSS, 31st percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
Improper control of generation of code ('code injection') in Microsoft Office Excel allows an authorized attacker to disclose information locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
Affected products
What each source reports
CVE List Score used
Microsoft Office Excel Information Disclosure Vulnerability
Improper control of generation of code ('code injection') in Microsoft Office Excel allows an authorized attacker to disclose information locally.
- Record
CVE-2026-123395- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-94
- Updated
- 2026-11-10
EUVDEUVD-2026-122301
Improper control of generation of code ('code injection') in Microsoft Office Excel allows an authorized attacker to disclose information locally.
- Record
EUVD-2026-122301- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-11
GitHub AdvisoriesGHSA-23fc-cg79-gqv2
Improper control of generation of code ('code injection') in Microsoft Office Excel allows an...
Improper control of generation of code ('code injection') in Microsoft Office Excel allows an authorized attacker to disclose information locally.
- Record
GHSA-23fc-cg79-gqv2- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N - Weakness
- CWE-94
- Updated
- 2026-11-10
NVD
Improper control of generation of code ('code injection') in Microsoft Office Excel allows an authorized attacker to disclose information locally.
- Record
CVE-2026-123395- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N - Weakness
- CWE-94
- Updated
- 2026-11-11
History
| Recorded | Changed | Sources |
|---|---|---|
| published | EUVD | |
| published | EUVD, NVD | |
| aliases, references | GitHub Advisories | |
| cwes, references, severity, title | CVE List | |
| first indexed | EUVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.