Security readout for executives and security teams
Plain-English summary
Apple fixed a memory corruption flaw where a maliciously crafted image could trigger arbitrary code execution. The sources name fixes across macOS Big Sur, iOS, iPadOS, watchOS, and tvOS. This is business-relevant because image handling is common and user-facing.
Executive priority
Treat this as a prompt Apple fleet patching issue, especially for executives, mobile users, and shared media-handling workflows. No active exploitation is evidenced here, but arbitrary code execution through image processing warrants timely remediation.
Technical view
CVE-2021-30928 is an Apple memory corruption issue addressed through improved input validation. The stated impact is arbitrary code execution when processing a malicious image. Public source detail is limited: no CVSS, CWE, affected component name, or exploit primitive is provided in the bundle.
Likely exposure
Exposure is most likely on Apple devices running versions earlier than macOS Big Sur 11.6, iOS/iPadOS 14.8 or 15, watchOS 8, and tvOS 15. Exact vulnerable version ranges are not provided.
Exploitation context
The bundle does not indicate CISA KEV listing or active exploitation. Sources only state that processing a maliciously crafted image may lead to arbitrary code execution, without public exploit details or attack telemetry.
Researcher notes
Available public detail is sparse. The useful facts are impact, trigger class, and fixed releases. Avoid assuming a specific framework, sandbox escape, remote delivery path, or exploit availability without additional Apple or researcher evidence.
Mitigation direction
- Update affected Apple systems to the listed fixed releases or later.
- Prioritize user-facing devices that process untrusted images.
- Check current Apple guidance for product-specific update paths.
- Retire or isolate Apple devices that cannot receive supported updates.
Validation and detection
- Inventory Apple devices and record OS versions.
- Confirm macOS Big Sur systems are at 11.6 or later.
- Confirm iOS and iPadOS systems are at 14.8, 15, or later.
- Confirm watchOS and tvOS systems are at 8 and 15 or later.
- Review device-management compliance reports for update gaps.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-30928 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/HT212804CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212807CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212814CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212819CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212815CVE reference · x_refsource_MISC
- https://support.apple.com/kb/HT212953CVE reference · x_refsource_CONFIRM
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.