CVE-2021-21148
HIGHCISA KEVEPSS 97th pctlDescription
Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 97% of all known CVEs.
Google Chromium V8 Heap Buffer Overflow Vulnerability
Google Chromium V8 Engine contains a heap buffer overflow vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
Apply updates per vendor instructions.
Remediation due: 2021-11-17
References
- http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.html
- https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html
- https://crbug.com/1170176
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/
- https://security.gentoo.org/glsa/202104-08
- https://www.debian.org/security/2021/dsa-4858
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21148
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-24.