MEDIUM · 5.5

CVE-2021-1883

This issue was addressed with improved checks. This issue is fixed in Security Update 2021-004 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, Security Update 2021-003 Catalina, tvOS 14.5, macOS Big Su...

Vulnerability Description

This issue was addressed with improved checks. This issue is fixed in Security Update 2021-004 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, Security Update 2021-003 Catalina, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted server messages may lead to heap corruption.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
AppleIpados< 14.5
AppleIphone Os< 14.5
AppleMac Os X>= 10.14, <= 10.14.5
AppleMacos>= 11.0, < 11.3
AppleTvos< 14.5
AppleWatchos< 7.4

Related Weaknesses (CWE)

References

FAQ

What is CVE-2021-1883?

CVE-2021-1883 is a vulnerability with a CVSS score of 5.5 (MEDIUM). This issue was addressed with improved checks. This issue is fixed in Security Update 2021-004 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, Security Update 2021-003 Catalina, tvOS 14.5, macOS Big Su...

How severe is CVE-2021-1883?

CVE-2021-1883 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-1883?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Ipados, Apple Iphone Os, Apple Mac Os X, Apple Macos, Apple Tvos.