Security readout for executives and security teams
CVE-2021-30884 is a privacy issue where a malicious website could reveal a user's browsing history on affected Apple platforms. Apple says it was fixed by adding restrictions to CSS compositing in iOS 15, iPadOS 15, tvOS 15, and watchOS 8. Exposure is most likely on Apple devices running releases before iOS 15, iPadOS 15, tvOS 15, or watchOS 8. The source bundle does not identify exact vulnerable version ranges or confirm exposure beyond the listed Apple products. Treat this as a moderate privacy-risk remediation item. It is web-triggered and affects user browsing-history confidentiality, but the provided sources do not show active exploitation or system compromise. Mitigation focus: Upgrade iPhone and iPad devices to iOS 15 or iPadOS 15 or later.; Upgrade Apple TV devices to tvOS 15 or later.; Upgrade Apple Watch devices to watchOS 8 or later..
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
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ATT&CK lookup starting points
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CVE-2021-30884 mapping review
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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/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/HT212869CVE 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.
