CVE & CISA-KEV Catalog

CVE-2021-21163

MEDIUM
6.5
CVSS v3
NVD

Description

Insufficient data validation in Reader Mode in Google Chrome on iOS prior to 89.0.4389.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page and a malicious server.

CWE-346

How to fix

Remediation Available
chromiumDebian
Fixed in:89.0.4389.82-1CVE-2021-21163
Fixed in:89.0.4389.82-1CVE-2021-21163
Fixed in:89.0.4389.82-1CVE-2021-21163
Fixed in:89.0.4389.82-1CVE-2021-21163
Google ChromeWindows application
Affected:89.0.4389.72Fixed in:89.0.4389.72Google LLC
Google Chrome (EXE)Windows application
Affected:89.0.4389.72Fixed in:89.0.4389.72Google LLC
Google Chrome BetaWindows application
Affected:89.0.4389.72Fixed in:89.0.4389.72Google LLC
Google Chrome Beta (EXE)Windows application
Affected:89.0.4389.72Fixed in:89.0.4389.72Google LLC
Google Chrome CanaryWindows application
Affected:89.0.4389.72Fixed in:89.0.4389.72Google LLC
Google Chrome DevWindows application
Affected:89.0.4389.72Fixed in:89.0.4389.72Google LLC
Google Chrome Dev (EXE)Windows application
Affected:89.0.4389.72Fixed in:89.0.4389.72Google LLC

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

0.94%probability of exploitation in 30 days
56thpercentile

Moderate risk: more likely to be exploited than 56% of all known CVEs.

References

Third-Party Advisory2
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CVE-2021-21163 severity badge

Markdown

[![CVE-2021-21163](https://tridentstack.com/cve/badge/CVE-2021-21163.svg)](https://tridentstack.com/cve/CVE-2021-21163)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-21163"><img src="https://tridentstack.com/cve/badge/CVE-2021-21163.svg" alt="CVE-2021-21163"></a>

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This 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 2024-11-21.