How severe is CVE-2021-30883?

CVE-2021-30883 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-30883 being actively exploited?

Yes. CVE-2021-30883 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-05-23, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2021-30883?

CVE-2021-30883 primarily affects Apple Ipados. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-30883?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2021-30883 have an EU (EUVD) identifier?

Yes. CVE-2021-30883 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-17800. It is also flagged as exploited in the EUVD (since 2022-05-23).

When was CVE-2021-30883 published?

CVE-2021-30883 was published on 2021-08-24 and last updated on 2026-06-17.

CVE-2021-30883

CVE-2021-30883 is a high-severity vulnerability in Apple Ipados with a CVSS 3.x base score of 7.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-05-23). The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 9.3
EPSS exploit prediction: 15% (96th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-05-23)
EU (EUVD) id: EUVD-2021-17800
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-05-23)
Weakness: CWE-787
Affected product: Apple Ipados
Published: 2021-08-24
Last modified: 2026-06-17

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..

Frequently asked questions

What is CVE-2021-30883?: 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..
How severe is CVE-2021-30883?: CVE-2021-30883 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-30883 being actively exploited?: Yes. CVE-2021-30883 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-05-23, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2021-30883?: CVE-2021-30883 primarily affects Apple Ipados. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-30883?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2021-30883 have an EU (EUVD) identifier?: Yes. CVE-2021-30883 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-17800. It is also flagged as exploited in the EUVD (since 2022-05-23).
When was CVE-2021-30883 published?: CVE-2021-30883 was published on 2021-08-24 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:12.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

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