Buffer overflow in Microsoft Windows 10
CVE-2021-34480
Scripting Engine Memory Corruption Vulnerability
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.342 (98.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.339 · newest: 0.342 · change: +0.002
Affected products
- Microsoft Windows 10 — versions 20h2, 21h1, 1607
- Microsoft Windows 10 Version 1507 — versions 10.0.10240.0, 10.0.0
- Microsoft Windows 10 Version 1607 — versions 10.0.14393.0, 10.0.0
- Microsoft Windows 10 Version 1809 — versions 10.0.0, 10.0.17763.0
- Microsoft Windows 10 Version 1909 — versions 10.0.0
- Microsoft Windows 10 Version 2004 — versions 10.0.0
- Microsoft Windows 10 Version 20h2 — versions 10.0.0
- Microsoft Windows 10 Version 21h1 — versions 10.0.0
- Microsoft Windows 7 — versions 6.1.0
- Microsoft Windows 7
Weakness classification (CWE)
References
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory, VDB Entry)
- msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34480 (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2021-34480?
- CVE-2021-34480 is a medium-severity vulnerability in Microsoft Windows 10, classified under Out-of-bounds Write. CVSS score: 6.8/10. Published 2021-08-12.
- How severe is CVE-2021-34480?
- Medium severity. CVSS v3 base score is 6.8 out of 10.