Vulnerability in Google Chrome
CVE-2021-21220
Insufficient validation of untrusted input in V8 in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
EPSS: 0.912 (99.7th percentile) — read the EPSS interpretation.
Affected products
- Google Chrome — versions unspecified
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop.html
- crbug.com/1196683
- GLSA-202104-08 (vendor-advisory)
- packetstormsecurity.com/files/162437/Google-Chrome-XOR-Typer-Out-Of-Bounds-Acce…
- FEDORA-2021-c3754414e7 (vendor-advisory)
- FEDORA-2021-ff893e12c5 (vendor-advisory)
- FEDORA-2021-35d2bb4627 (vendor-advisory)
- packetstormsecurity.com/files/176210/Chrome-V8-JIT-XOR-Arbitrary-Code-Execution…
Frequently asked questions
- What is CVE-2021-21220?
- CVE-2021-21220 is a vulnerability in Google Chrome. Published 2021-04-26.
- Is CVE-2021-21220 known to be exploited?
- Yes. CVE-2021-21220 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 24 public proof-of-concept repositories are indexed.