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TI-2021-11209 Aliases CVE-2021-30836GHSA-92w6-fxxp-58w5

Out-of-bounds read in Apple iOS and iPadOS

Priority LOW 27CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 3 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

Summary

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted audio file may disclose restricted memory.

Why it matters now

EPSS 0.01104 65th percentileScored 2026-11-07
Fix Partial iOS and iPadOS (Apple): 14.8, 15tvOS (Apple): 15+1 more productRed Hat: 2 advisoriesRed Hat: 3 fixed, 2 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleiOS and iPadOSbefore 14.814.8Patch availableCNA
AppleiOS and iPadOSbefore 1515Patch availableCNA
AppletvOSbefore 1515Patch availableCNA
ApplewatchOSbefore 88Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 14.8 Fixed in 14.8 Patch available CNA
  • iOS and iPadOS VendorApple Affected before 15 Fixed in 15 Patch available CNA
  • tvOS VendorApple Affected before 15 Fixed in 15 Patch available CNA
  • watchOS VendorApple Affected before 8 Fixed in 8 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*before 15.0.0VulnerableApple
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 14.8VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 14.8VulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*before 12.0.1VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 15.0VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 8.0VulnerableApple
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 15.0.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 14.8 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 14.8 Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 12.0.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 15.0 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 8.0 Vulnerable ·Apple

Remediation

  • Fix · CNA iOS and iPadOS (Apple) Fixed in 14.8
  • Fix · CNA iOS and iPadOS (Apple) Fixed in 15
  • Fix · CNA tvOS (Apple) Fixed in 15
  • Fix · CNA watchOS (Apple) Fixed in 8

Red Hat 2 advisories

  • RHSA-2025:10364 Released 2025-07-07 · Red Hat rating Important
    webkitgtk4 security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4-2.48.3-2.el7_9, webkitgtk4-devel-2.48.3-2.el7_9, webkitgtk4-jsc-2.48.3-2.el7_9 +1
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-devel-2.48.3-2.el7_9, webkitgtk4-doc-2.48.3-2.el7_9, webkitgtk4-jsc-devel-2.48.3-2.el7_9
  • RHSA-2022:1777 Released 2022-05-10 · Red Hat rating Moderate
    webkit2gtk3 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3-2.34.6-1.el8, webkit2gtk3-devel-2.34.6-1.el8, webkit2gtk3-jsc-2.34.6-1.el8 +1

Fixed in the same release

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

  • Release ·

    Apple tvOS, watchOS 15, 8

    9 records Highest priority Priority MEDIUM 2 MEDIUM, 7 LOW

    Other records, highest priority first

    • TI-2021-11192 Type confusion in Apple iOS and iPadOSPriority MEDIUM 41
    • TI-2021-11184 Use after free in Apple iOS and iPadOSPriority MEDIUM 41
    • TI-2021-11212 Apple iOS and iPadOS: Processing a maliciously crafted dfont file may lead to arbitrary…Priority LOW 36
    Show all 9 records →
  • Release ·

    Apple iOS and iPadOS 15

    9 records Highest priority Priority MEDIUM 2 MEDIUM, 7 LOW

    Other records, highest priority first

    • TI-2021-11192 Type confusion in Apple iOS and iPadOSPriority MEDIUM 41
    • TI-2021-11184 Use after free in Apple iOS and iPadOSPriority MEDIUM 41
    • TI-2021-11212 Apple iOS and iPadOS: Processing a maliciously crafted dfont file may lead to arbitrary…Priority LOW 36
    Show all 9 records →
Show 1 more group
  • Release ·

    Apple iOS and iPadOS 14.8

    4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2021-11192 Type confusion in Apple iOS and iPadOSPriority MEDIUM 41
    • TI-2021-11207 Apple iOS and iPadOS: Processing a malicious audio file may result in unexpected…Priority LOW 36
    • TI-2021-11196 Apple iOS and iPadOS: An attacker in a privileged network position may be able to bypass…Priority LOW 33
    Show all 4 records →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2022:1777
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2025:10364
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2025:10364
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-30836
  2. 2026-10-03 Alias added: GHSA-92w6-fxxp-58w5

References

Advisory 7

  • 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