Security readout for executives and security teams
Plain-English summary
CVE-2020-27935 is an Apple sandbox bypass issue. A restricted process could escape intended sandbox limits, weakening a key containment control. Apple says it was fixed through improved logic in iOS/iPadOS, macOS, watchOS, and tvOS updates. Public sources do not provide severity, CVSS, or detailed impact.
Executive priority
Treat as a containment-control weakness with incomplete public detail. Prioritize routine Apple fleet patch compliance rather than emergency response unless internal exposure shows outdated, sensitive, or unmanaged devices.
Technical view
The CVE describes a logic flaw allowing a sandboxed process to circumvent sandbox restrictions. Fixed versions are iOS 14.2, iPadOS 14.2, macOS Big Sur 11.0.1, watchOS 7.1, and tvOS 14.2. The record lacks CVSS, CWE, vulnerable version ranges, affected component details, and prerequisite conditions.
Likely exposure
Exposure is likely limited to Apple devices running affected products below the fixed releases. The source bundle does not specify exact vulnerable version ranges, so validation should focus on OS version inventory against Apple’s fixed versions.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not listed as KEV in the bundle. The described condition requires a sandboxed process, but public details are too limited to infer exploitability, chaining requirements, or real-world use.
Researcher notes
Public evidence is sparse: no CVSS, CWE, component name, vulnerable ranges, or exploit narrative. Analysis should stay anchored to Apple’s fixed versions and the stated sandbox restriction bypass. Avoid assuming kernel impact, privilege escalation scope, or exploitation in the wild.
Mitigation direction
- Update iOS and iPadOS devices to 14.2 or later.
- Update macOS Big Sur systems to 11.0.1 or later.
- Update watchOS devices to 7.1 or later.
- Update tvOS devices to 14.2 or later.
- Check current Apple guidance for superseding security updates.
Validation and detection
- Inventory Apple device OS versions across managed and unmanaged fleets.
- Compare versions against Apple’s fixed releases for each product.
- Confirm MDM compliance policies require current supported Apple updates.
- Prioritize validation for devices handling sensitive data or elevated access.
- Document any unsupported devices that cannot receive fixed versions.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2020-27935 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/HT211931CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT211928CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT211929CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT211930CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.