Buffer overflow in Google Chrome
CVE-2021-21222
Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.018 (77.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Google Chrome — versions unspecified
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 32, 33, 34
Weakness classification (CWE)
References
- crbug.com/1194046 (Third Party Advisory)
- chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html (Third Party Advisory, Release Notes)
- www.debian.org/security/2021/dsa-4906 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202104-08 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2021-21222?
- CVE-2021-21222 is a medium-severity vulnerability in Google Chrome, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2021-04-26.
- How severe is CVE-2021-21222?
- Medium severity. CVSS v3 base score is 6.5 out of 10.