CVE-2021-31010
Apple iOS, macOS, watchOS Sandbox Bypass Vulnerability
- High 7.5
- Exploited: added to CISA KEV 25 Aug 2022
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..
Key facts
- Published
- 24 Aug 2021
- Last changed
- 21 Oct 2025
- Assigned by
- apple
- KEV added
- 25 Aug 2022
- KEV fix due
- 15 Sep 2022
- EPSS
- 3.369% likely to be exploited in the next 30 days, higher than 88.946% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: partial
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.5CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Apple | macOS |
|
| Apple | macOS |
|
| Apple | watchOS |
|
| Apple | watchOS |
|
| Apple | watchOS |
|
Timeline
- 24 Aug 2021 Published
- 25 Aug 2022 CVE-2021-31010 added to CISA KEV
- 25 Aug 2022 Added to the CISA KEV catalogue