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CVE-2021-30883

Apple Multiple Products Memory Corruption

7.8 HIGHActively exploited (CISA KEV)EPSS 14.7%
  1. Published24 Aug 2021
  2. Added to CISA KEV23 May 2022
  3. Remediation due13 Jun 2022
Actively exploited (CISA KEV)

Apple iOS, macOS, watchOS, and tvOS contain a memory corruption vulnerability that could allow for remote code execution.

Added to KEV: 23 May 2022Federal remediation due: 13 Jun 2022

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Apple iPadOS≥ 15.0 < 15.0.2 · < 14.8.1
Apple iPhone OS≥ 15.0 < 15.0.2 · < 14.8.1
Apple macOS≥ 11.0 < 11.6.1 · 12.0
Apple Tvos< 15.1
Apple Watchos< 8.1

Remediation

Fixed in
Apple iPadOS≥ 15.0.2
Apple iPhone OS≥ 15.0.2
Apple macOS≥ 11.6.1
Apple Tvos≥ 15.1
Apple Watchos≥ 8.1

References

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Frequently asked

Is CVE-2021-30883 being actively exploited?

Yes. CVE-2021-30883 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 23 May 2022.

How severe is CVE-2021-30883?

CVE-2021-30883 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 14.7% probability of exploitation.

Which products are affected by CVE-2021-30883?

Affected products include Apple iPadOS, Apple iPhone OS, Apple macOS, Apple Tvos, Apple Watchos.

How do I fix CVE-2021-30883?

Upgrade affected software to a fixed version, for example Apple iPadOS 15.0.2, Apple iPhone OS 15.0.2, Apple macOS 11.6.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-30883 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.