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TI-2021-11348 Aliases CVE-2021-30983

Buffer overflow in Apple iOS and iPadOS

Priority CRITICAL 93Exploited in the wildCWE-120Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An application may be able to execute arbitrary code with kernel privileges.

Why it matters now

Exploitation Active In CISA KEV since 2022-06-27CISA due date 2022-07-18
EPSS 0.02923 87th percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 15.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleiOS and iPadOSbefore 15.215.2Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 15.2 Fixed in 15.2 Patch available CNA

CPE configurations NVD · 2

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:ipados:*:*:*:*:*:*:*:* Versions before 15.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 15.2 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS and iPadOS (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 iOS and iPadOS 15.2

    38 records Highest priority Priority CRITICAL 1 CRITICAL, 4 MEDIUM, 33 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-2021-11306 Out-of-bounds read in Apple watchOSPriority MEDIUM 41
    Show all 38 records →

Timeline

  1. 2022-06-27 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2021-30983

References

Advisory 1

  • 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