Buffer overflow in Google Chrome
CVE-2021-21144
Heap buffer overflow in Tab Groups in Google Chrome prior to 88.0.4324.146 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension.
Vulnerability class: Buffer Overflow
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: 0.009 (57.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Google Chrome — versions unspecified
- Fedoraproject Fedora — versions 32, 33
Weakness classification (CWE)
Public proof-of-concept exploits
References
- chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
- crbug.com/1163845 (Permissions Required)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202104-08 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21144?
- CVE-2021-21144 is a high-severity vulnerability in Google Chrome, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2021-02-09.
- How severe is CVE-2021-21144?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-21144 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.