Vulnerability Intelligence Report
Apple iOS, macOS, watchOS Sandbox Bypass Vulnerability
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..
CISA KEV
SSVC: Active Exploitation
Automatable
CVSS Base Score
7.5
HIGH
Exploitability:3.9
Impact Score:3.6
EPSS Probability:3.67%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-502 ↗CWE-502 Deserialization of Untrusted Data
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Apple | macOS | unspecified < 11.6 (affected) |
| Apple | macOS | unspecified < 2021 (affected) |
| Apple | watchOS | unspecified < 7.6 (affected) |
| Apple | watchOS | unspecified < 14.8 (affected) |
| Apple | watchOS | unspecified < 12.5 (affected) |
Threat Intelligence Signals
CISA KEV
ACTIVE IN CATALOG
EPSS Score
3.673%
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Apple Inc. · Vendor · USA |
| Reserved | 2021-04-13T00:00:00 |
| Published | 2021-08-24T18:51:48 |
| Last Updated | 2025-10-21T23:25:36 |
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