Use After Free in Google Chrome
CVE-2021-21120
Use after free in WebSQL in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.069 (93.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.069 · newest: 0.069 · change: 0.000
Affected products
- Google Chrome — versions unspecified
- Microsoft Edge Chromium
Weakness classification (CWE)
References
- chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html (Release Notes, Vendor Advisory)
- crbug.com/1160602 (Permissions Required, Third Party Advisory)
- msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21120 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-21120?
- CVE-2021-21120 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 8.8/10. Published 2021-02-09.
- How severe is CVE-2021-21120?
- High severity. CVSS v3 base score is 8.8 out of 10.