CVE-2026-124229
Microsoft Office Excel Remote Code Execution Vulnerability
CVE-2026-124229 is a medium vulnerability (CVSS 6.6) 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 1.90%, the 80th percentile. No source names a fixed version.
- Severity
- 6.6 MediumCVSS 3.1, CVE List
- Exploit chance
- 1.90%EPSS, 80th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
Deserialization of untrusted data in Microsoft Office Excel allows an unauthorized attacker to execute code with a physical attack.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
What each source reports
CVE List Score used
Microsoft Office Excel Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office Excel allows an unauthorized attacker to execute code with a physical attack.
- Record
CVE-2026-124229- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Weakness
- CWE-502
- Updated
- 2026-11-10
EUVDEUVD-2026-122272
Deserialization of untrusted data in Microsoft Office Excel allows an unauthorized attacker to execute code with a physical attack.
- Record
EUVD-2026-122272- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-11
GitHub AdvisoriesGHSA-p495-3hqh-jg2f
Deserialization of untrusted data in Microsoft Office Excel allows an unauthorized attacker to...
Deserialization of untrusted data in Microsoft Office Excel allows an unauthorized attacker to execute code with a physical attack.
- Record
GHSA-p495-3hqh-jg2f- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-10
NVD
Deserialization of untrusted data in Microsoft Office Excel allows an unauthorized attacker to execute code with a physical attack.
- Record
CVE-2026-124229- CVSS 3.1
- 6.6 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-11
History
| Recorded | Changed | Sources |
|---|---|---|
| published | EUVD, NVD | |
| 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.