CVE-2026-86953 json
An out-of-bounds write issue was addressed with improved bounds checking.
published 2026-10-20 20 d ago modified 2026-11-09 3 h ago also EUVD-2026-104730
- cvss
- 4.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. An attacker in physical proximity may be able to cause a denial-of-service.
Patch / fix
- Apple iOS and iPadOS 27
- Apple macOS 27
- Apple tvOS 27
- Apple visionOS 27
- Apple watchOS 27
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 20 d ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 4.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Apple iOS and iPadOS
- Apple macOS
- Apple tvOS
- Apple visionOS
- Apple watchOS
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
support.apple.com
/en-us/149034
vendor-advisory, release-notes
-
support.apple.com
/en-us/149035
vendor-advisory, release-notes
-
support.apple.com
/en-us/149036
vendor-advisory, release-notes
-
support.apple.com
/en-us/149037
vendor-advisory, release-notes
-
support.apple.com
/en-us/149038
vendor-advisory, release-notes
Sources
- CVE List CVE-2026-86953
- NVD CVE-2026-86953
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