Buffer overflow in Google Chrome
CVE-2021-21155
Heap buffer overflow in Tab Strip in Google Chrome on Windows prior to 88.0.4324.182 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.9% 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
- Microsoft Windows
- Fedoraproject Fedora — versions 32, 33
Weakness classification (CWE)
Public proof-of-concept exploits
References
- chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html (Release Notes, Vendor Advisory)
- crbug.com/1175500 (Permissions Required, Exploit, Patch, Issue Tracking, 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)
- security.gentoo.org/glsa/202104-08 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21155?
- CVE-2021-21155 is a critical-severity vulnerability in Google Chrome, classified under Out-of-bounds Write. CVSS score: 9.6/10. Published 2021-02-22.
- How severe is CVE-2021-21155?
- Critical severity. CVSS v3 base score is 9.6 out of 10.
- Is CVE-2021-21155 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.