Security readout for executives and security teams
Plain-English summary
Apple fixed a flaw where opening a malicious USD file could expose memory contents from affected iOS, iPadOS, and macOS systems. The business risk is data exposure through crafted file processing, not a confirmed takeover scenario in the provided sources.
Executive priority
Treat this as a routine but important Apple patching item. Prioritize managed devices that handle external files, but the provided evidence does not justify emergency response based on exploitation.
Technical view
CVE-2021-30941 is a buffer overflow addressed by improved memory handling. Apple states that processing a maliciously crafted USD file may disclose memory contents. Fixed releases include iOS/iPadOS 15.2, macOS Monterey 12.1, macOS Big Sur 11.6.2, and Security Update 2021-008 Catalina.
Likely exposure
Exposure is most likely on Apple devices running versions before the listed fixed releases, especially where users may open USD files from external or untrusted sources.
Exploitation context
The provided sources do not report active exploitation, and the KEV flag is false. Public evidence here supports a malicious-file processing scenario with possible memory disclosure.
Researcher notes
The source bundle provides no CVSS, CWE, exploit details, affected version ranges, or root-cause detail beyond buffer overflow and improved memory handling. Validation should focus on Apple security update applicability and file-processing exposure.
Mitigation direction
- Update iOS and iPadOS devices to 15.2 or later where applicable.
- Update macOS Monterey systems to 12.1 or later.
- Update macOS Big Sur systems to 11.6.2 or later.
- Apply Security Update 2021-008 Catalina where Catalina remains in use.
- Discourage opening untrusted USD files until affected systems are updated.
Validation and detection
- Inventory Apple endpoints and record iOS, iPadOS, and macOS versions.
- Compare versions against Apple’s fixed releases for this CVE.
- Confirm Catalina systems received Security Update 2021-008.
- Identify workflows where users receive or process USD files.
- Check MDM or endpoint reporting for update compliance gaps.
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-2021-30941 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/HT212976CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212978CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212979CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212981CVE 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.