Buffer overflow in Microsoft 365 Apps
CVE-2023-33133
Microsoft Excel Remote Code Execution Vulnerability
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.440 (98.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.440 · newest: 0.440 · change: 0.000
Affected products
- Microsoft 365 Apps
- Microsoft Excel — versions 2013, 2016
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Excel 2013 Service Pack 1 — versions 15.0.0.0
- Microsoft Excel 2016 — versions 16.0.0.0
- Microsoft Office 2019 — versions 19.0.0
- Microsoft Office 2019 For Mac — versions 16.0.0
- Microsoft Office Ltsc 2021 — versions 16.0.1
- Microsoft Office Ltsc For Mac 2021 — versions 16.0.1
- Microsoft Office Online Server — versions 16.0.1
Weakness classification (CWE)
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33133 (vendor-advisory, Patch, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-33133?
- CVE-2023-33133 is a high-severity vulnerability in Microsoft 365 Apps, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2023-06-14.
- How severe is CVE-2023-33133?
- High severity. CVSS v3 base score is 7.8 out of 10.