How severe is CVE-2021-31010?

CVE-2021-31010 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-31010 being actively exploited?

Yes. CVE-2021-31010 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-08-25, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2021-31010?

CVE-2021-31010 primarily affects Apple Ipados. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-31010?

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-2021-31010 have an EU (EUVD) identifier?

Yes. CVE-2021-31010 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-17927. It is also flagged as exploited in the EUVD (since 2022-08-25).

When was CVE-2021-31010 published?

CVE-2021-31010 was published on 2021-08-24 and last updated on 2026-06-17.

CVE-2021-31010

CVE-2021-31010 is a high-severity vulnerability in Apple Ipados with a CVSS 3.x base score of 7.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-08-25). The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-08-25)
EU (EUVD) id: EUVD-2021-17927
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-08-25)
Weakness: CWE-502
Affected product: Apple Ipados
Published: 2021-08-24
Last modified: 2026-06-17

Description

A deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release..

Frequently asked questions

What is CVE-2021-31010?: A deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release..
How severe is CVE-2021-31010?: CVE-2021-31010 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-31010 being actively exploited?: Yes. CVE-2021-31010 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-08-25, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2021-31010?: CVE-2021-31010 primarily affects Apple Ipados. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-31010?: 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-2021-31010 have an EU (EUVD) identifier?: Yes. CVE-2021-31010 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-17927. It is also flagged as exploited in the EUVD (since 2022-08-25).
When was CVE-2021-31010 published?: CVE-2021-31010 was published on 2021-08-24 and last updated on 2026-06-17.

References

Affected products (21)

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-007:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-008:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-001:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-002:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-003:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-004:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

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