Strix
26.1K

CVE-2021-30953

HIGHCVSS 8.8/10EPSS 1.94%

Last modified

CVE-2021-30953 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. EPSS estimates a 1.94% chance of exploitation in the next 30 days.

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.

Metrics

CVSS 3.1
8.8/10

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

EPSS Probability
1.94%

77.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
AppleSafari< 15.2
AppleIpados< 15.2
AppleIphone Os< 15.2
AppleMacos>= 12.0.0, <= 12.1
AppleTvos< 15.2
AppleWatchos< 8.3
FedoraprojectFedora34
DebianDebian Linux10.0
DebianDebian Linux11.0
FedoraprojectFedora35

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-30953?
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.
How severe is CVE-2021-30953?
CVE-2021-30953 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.94% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30953?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-30953?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST