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TI-2021-11361 Aliases CVE-2021-30997

Cleartext storage of sensitive information in Apple iOS and iPadOS

Priority LOW 34CWE-312Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-312.

Summary

A S/MIME issue existed in the handling of encrypted email. This issue was addressed by not automatically loading some MIME parts. This issue is fixed in iOS 15.2 and iPadOS 15.2. An attacker may be able to recover plaintext contents of an S/MIME-encrypted e-mail.

Why it matters now

EPSS 0.00688 52nd percentileScored 2026-11-07
Fix Fixed iOS and iPadOS (Apple): 15.2

SSVC decision points

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

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-2021-11348 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 →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-30997

References

Other 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