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TI-2021-11327 Aliases CVE-2021-30960

Buffer overflow in Apple watchOS

Priority LOW 27CWE-120Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.1, watchOS 8.3, iOS 15.2 and iPadOS 15.2, tvOS 15.2. Parsing a maliciously crafted audio file may lead to disclosure of user information.

Why it matters now

EPSS 0.01008 63rd percentileScored 2026-11-07
Fix Fixed watchOS (Apple): 8.3iOS and iPadOS (Apple): 15.2+1 more product

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApplewatchOSbefore 8.38.3Patch availableCNA
AppleiOS and iPadOSbefore 15.215.2Patch availableCNA
ApplemacOSbefore 12.112.1Patch availableCNA
ApplemacOSbefore 15.215.2Patch availableCNA
  • watchOS VendorApple Affected before 8.3 Fixed in 8.3 Patch available CNA
  • iOS and iPadOS VendorApple Affected before 15.2 Fixed in 15.2 Patch available CNA
  • macOS VendorApple Affected before 12.1 Fixed in 12.1 Patch available CNA
  • macOS VendorApple Affected before 15.2 Fixed in 15.2 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 15.2VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 15.2VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 12.1; 11.0 to before 11.6.3VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 15.2VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 8.3VulnerableApple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 15.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 15.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 12.1; 11.0 to before 11.6.3 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 15.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 8.3 Vulnerable ·Apple

Remediation

  • Fix · CNA watchOS (Apple) Fixed in 8.3
  • Fix · CNA iOS and iPadOS (Apple) Fixed in 15.2
  • Fix · CNA macOS (Apple) Fixed in 12.1
  • Fix · CNA macOS (Apple) Fixed in 15.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apple macOS 12.1

    40 records Highest priority Priority MEDIUM 6 MEDIUM, 34 LOW

    Other records, highest priority first

    • TI-2021-11304 Out-of-bounds write in Apple watchOSPriority MEDIUM 51
    • TI-2021-11372 Apple iOS and iPadOS: Multiple issues in HDF5Priority MEDIUM 44
    • TI-2021-11341 Incorrect authorization in Apple macOSPriority MEDIUM 41
    Show all 40 records →
  • Release ·

    Apple iOS and iPadOS 15.2

    38 records Highest priority Priority CRITICAL 1 CRITICAL, 4 MEDIUM, 33 LOW

    Other records, highest priority first

    • TI-2021-11348 Buffer overflow in Apple iOS and iPadOSPriority CRITICAL 93
    • TI-2021-11304 Out-of-bounds write in Apple watchOSPriority MEDIUM 51
    • TI-2021-11372 Apple iOS and iPadOS: Multiple issues in HDF5Priority MEDIUM 44
    Show all 38 records →
Show 2 more groups
  • Release ·

    Apple watchOS 8.3

    22 records Highest priority Priority MEDIUM 3 MEDIUM, 19 LOW

    Other records, highest priority first

    • TI-2021-11304 Out-of-bounds write in Apple watchOSPriority MEDIUM 51
    • TI-2021-11306 Out-of-bounds read in Apple watchOSPriority MEDIUM 41
    • TI-2021-11357 Buffer overflow in Apple watchOSPriority MEDIUM 40
    Show all 22 records →
  • Release ·

    Apple macOS 15.2

    18 records Highest priority Priority MEDIUM 3 MEDIUM, 15 LOW

    Other records, highest priority first

    • TI-2021-11304 Out-of-bounds write in Apple watchOSPriority MEDIUM 51
    • TI-2021-11306 Out-of-bounds read in Apple watchOSPriority MEDIUM 41
    • TI-2021-11357 Buffer overflow in Apple watchOSPriority MEDIUM 40
    Show all 18 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-30960

References

Other 5

  • TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
See all 2382 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences