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TI-2026-76677 Aliases CVE-2026-86872GHSA-qhr9-6j48-39x4

Logic issue in Apple Safari, visionOS and watchOS

Priority LOW 24CWE-843Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Apple Safari, visionOS and watchOS from 0 before 27 are affected. The flaw is a type confusion weakness (CWE-843) that Apple describes as a logic issue in state management. An attacker can get a user to process maliciously crafted web content, which may cause unexpected behavior with limited confidentiality and availability impact.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

A logic issue was addressed with improved state management. This issue is fixed in Safari 27, visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to unexpected behavior.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00265 18th percentileScored 2026-11-07
Fix Fixed Safari (Apple): 27visionOS (Apple): 27+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleSafaribefore 2727Patch availableCNA
ApplevisionOSbefore 2727Patch availableCNA
ApplewatchOSbefore 2727Patch availableCNA
  • Safari VendorApple Affected before 27 Fixed in 27 Patch available CNA
  • visionOS VendorApple Affected before 27 Fixed in 27 Patch available CNA
  • watchOS VendorApple Affected before 27 Fixed in 27 Patch available CNA

CPE names Threatist (inferred) · 2

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*——Apple
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*——Apple
  • cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions — — ·Apple
  • cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:* Versions — — ·Apple

Remediation

Update Safari to 27, visionOS to 27 and watchOS to 27, which fix this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Safari (Apple) Fixed in 27
  • Fix · CNA visionOS (Apple) Fixed in 27
  • Fix · CNA watchOS (Apple) Fixed in 27

Fixed in the same release

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

  • Release ·

    Apple visionOS 27

    14 records Highest priority Priority MEDIUM 2 MEDIUM, 12 LOW

    Other records, highest priority first

    • TI-2026-76687 Type confusion in Apple Safari and iOS allows code executionPriority MEDIUM 40
    • TI-2026-76685 Stack overflow in Apple iOS, macOS and visionOS allows code executionPriority MEDIUM 40
    • TI-2026-76698 Out-of-bounds read in Apple operating systems can crash the systemPriority LOW 29
    Show all 14 records →
  • Release ·

    Apple watchOS 27

    9 records Highest priority Priority LOW 9 LOW

    Other records, highest priority first

    • TI-2026-76698 Out-of-bounds read in Apple operating systems can crash the systemPriority LOW 29
    • TI-2026-76674 Out-of-bounds write in Apple operating systems can crash devicesPriority LOW 29
    • TI-2026-76701 Double free in Apple iOS, iPadOS and macOS causes system terminationPriority LOW 24
    Show all 9 records →
Show 1 more group
  • Release ·

    Apple Safari 27

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-76687 Type confusion in Apple Safari and iOS allows code executionPriority MEDIUM 40
    Show all 2 records →

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-86872
  2. 2026-10-20 CVSS score added · CISA ADP
  3. 2026-10-20 Weakness changed · CISA ADP
  4. 2026-10-20 CISA SSVC decision points changed
  5. 2026-10-21 Alias added: GHSA-qhr9-6j48-39x4

References

Other 3

  • TI-2026-46583 Improper authentication in Apple macOS KEVCVSS 3.1CRITICAL 9.8
  • 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
See all 9536 →

Sources

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