CVE-2026-28931 json
A buffer overflow was addressed with improved bounds checking.
published 2026-07-27 3 mo ago modified 2026-07-29 3 mo ago also EUVD-2026-49422
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, tvOS 26.6, watchOS 26.6. Connecting to a malicious NFS server may lead to kernel memory corruption.
Patch / fix
- Apple iOS and iPadOS 26.6
- Apple macOS 26.6
- Apple tvOS 26.6
- Apple watchOS 26.6
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
0.50% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
- Apple iOS and iPadOS
- Apple macOS
- Apple tvOS
- Apple watchOS
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
support.apple.com
/en-us/128066
release-notes, vendor-advisory
-
support.apple.com
/en-us/128067
release-notes, vendor-advisory
-
support.apple.com
/en-us/128068
release-notes, vendor-advisory
-
support.apple.com
/en-us/128069
release-notes, vendor-advisory
Sources
- CVE List CVE-2026-28931
- NVD CVE-2026-28931
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