Use After Free in Google Chrome
CVE-2021-30555
Use after free in Sharing in Google Chrome prior to 91.0.4472.114 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page and user gesture.
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: 0.013 (70.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Google Chrome — versions unspecified
- Fedoraproject Fedora — versions 33, 34
Weakness classification (CWE)
References
- chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop_17.html (Release Notes, Vendor Advisory)
- crbug.com/1215029 (Permissions Required, Vendor Advisory)
- security.gentoo.org/glsa/202107-06 (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)
Frequently asked questions
- What is CVE-2021-30555?
- CVE-2021-30555 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 8.8/10. Published 2021-07-02.
- How severe is CVE-2021-30555?
- High severity. CVSS v3 base score is 8.8 out of 10.