CVE-2021-21166 vulnerability in Google and Other Products
Published on March 9, 2021
Known Exploited Vulnerability
This Google Chrome Heap Buffer Overflow in WebAudio Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Data race in audio in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
The following remediation steps are recommended / required by November 17, 2021: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2021-21166 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Race Condition Vulnerability?
The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
CVE-2021-21166 has been classified to as a Race Condition vulnerability or weakness.
Products Associated with CVE-2021-21166
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Affected Versions
Google Chrome:- Version unspecified and below 89.0.4389.72 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.