Vulnerability Details : CVE-2021-21148

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.
Published 2021-02-09 16:15:12
Updated 2025-02-05 13:56:57
Source Chrome
View at NVD,   CVE.org
Vulnerability category: Overflow

Products affected by CVE-2021-21148

CVE-2021-21148 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Google Chromium V8 Heap Buffer Overflow Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
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 E
Notes:
https://nvd.nist.gov/vuln/detail/CVE-2021-21148
Added on 2021-11-03 Action due date 2021-11-17

Exploit prediction scoring system (EPSS) score for CVE-2021-21148

EPSS FAQ
26.53%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 96 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-21148

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.8
 MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:P
8.6
6.4
 NIST
8.8
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2.8
5.9
 134c704f-9b21-4f2e-91b3-4a467353bcc0 2025-01-29
8.8
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2.8
5.9
 NIST

CWE ids for CVE-2021-21148

  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by:
    • 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
    • nvd@nist.gov (Primary)

References for CVE-2021-21148

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