CVE-2025-54899
Microsoft Excel Remote Code Execution Vulnerability
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Excel Remote Code Execution Vulnerability
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
- Record
CVE-2025-54899- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Weakness
- CWE-590
- Updated
- 2026-11-02
EUVDEUVD-2025-27356
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
- Record
EUVD-2025-27356- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-2648-39fc-pr84
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to...
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
- Record
GHSA-2648-39fc-pr84- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-590
- Updated
- 2026-11-02
NVD
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
- Record
CVE-2025-54899- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-590
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-54899 is a high vulnerability (CVSS 7.8) in Microsoft Excel, published September 9, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. No source names a fixed version.