CVE-2025-54899
HIGHCVSS 7.8/10EPSS 0.54%
Last modified
CVE-2025-54899 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.. EPSS estimates a 0.54% chance of exploitation in the next 30 days.
Description
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | 365 Apps | All versions |
| Microsoft | Excel | 2016 |
| Microsoft | Office | 2019 |
| Microsoft | Office Long Term Servicing Channel | 2021 |
| Microsoft | Office Long Term Servicing Channel | 2024 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-54899?
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
How severe is CVE-2025-54899?
CVE-2025-54899 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.
How do I fix CVE-2025-54899?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2025-54899?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST