Use after free in Blink in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Published 2021-04-26 17:15:08
Updated 2024-02-15 02:00:02
Source Chrome
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

CVE-2021-21206 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Google Chromium Blink Use-After-Free Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Google Chromium Blink contains a use-after-free 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 O
Added on 2021-11-03 Action due date 2021-11-17

Exploit prediction scoring system (EPSS) score for CVE-2021-21206

7.82%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 94 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-21206

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
NIST

CWE ids for CVE-2021-21206

  • Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-21206

Products affected by CVE-2021-21206

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