CVE-2021-31010
CVE-2021-31010
Vexday Risk Score
51Attention
SSVC decision (CISA)
Act
Exploitation + impact → act immediately
CVSS 7.5EPSS 3.7%KEV simPoC —Nuclei —Metasploit —Patch —
Lifecycle
24 Aug 2021Published on NVD
25 Aug 2022Active exploitation (CISA KEV)
Recommendation: Patch as soon as possible — active exploitation confirmed.
In short
A program on Apple devices could bypass security restrictions by exploiting how it reads untrusted data. This allowed a sandboxed app to escape its restrictions and potentially access sensitive information.
Technical detail
Deserialization vulnerability (CWE-502) in sandboxed processes on macOS, iOS, iPadOS, and watchOS allows circumvention of sandbox isolation through improper validation of serialized objects. The attack requires execution within a sandboxed context but can break confinement; this issue was exploited in the wild prior to patching.
Summary generated and translated by AI from the official 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..
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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