CVE-2021-40485
HIGHCVSS 7.8/10EPSS 2.54%
Last modified
CVE-2021-40485 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Microsoft Excel Remote Code Execution Vulnerability. EPSS estimates a 2.54% chance of exploitation in the next 30 days.
Description
Microsoft Excel Remote Code Execution Vulnerability
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 | Update |
|---|---|---|---|
| Microsoft | 365 Apps | All versions | — |
| Microsoft | Excel | 2013 | Sp1 |
| Microsoft | Excel | 2016 | — |
| Microsoft | Office | 2019 | — |
| Microsoft | Office Long Term Servicing Channel | 2021 | — |
| Microsoft | Office Online Server | All versions | — |
| Microsoft | Sharepoint Enterprise Server | 2013 | Sp1 |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40485Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40485Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-40485?
Microsoft Excel Remote Code Execution Vulnerability
How severe is CVE-2021-40485?
CVE-2021-40485 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 2.54% probability of exploitation in the next 30 days.
How do I fix CVE-2021-40485?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-4048An out-of-bounds read flaw was found in the CLARRV, DLARRV, …9.1
- CVE-2021-40480Microsoft Office Visio Remote Code Execution Vulnerability7.8
- CVE-2021-40481Microsoft Office Visio Remote Code Execution Vulnerability7.1
- CVE-2021-40482Microsoft SharePoint Server Information Disclosure Vulnerabi…5.3
- CVE-2021-40483Microsoft SharePoint Server Spoofing Vulnerability7.6
- CVE-2021-40484Microsoft SharePoint Server Spoofing Vulnerability7.6
- CVE-2021-40486Microsoft Word Remote Code Execution Vulnerability7.8
- CVE-2021-40487Microsoft SharePoint Server Remote Code Execution Vulnerabil…8.1
- CVE-2021-40488Storage Spaces Controller Elevation of Privilege Vulnerabili…7.8
- CVE-2021-40489Storage Spaces Controller Elevation of Privilege Vulnerabili…7.8
- CVE-2021-4049livehelperchat is vulnerable to Cross-Site Request Forgery (…6.5
- CVE-2021-40490A race condition was discovered in ext4_write_inline_data_en…7
Are you affected by CVE-2021-40485?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST