CVE-2020-9958 json
An out-of-bounds write issue was addressed with improved bounds checking.
published 6y ago modified 4mo ago also EUVD-2020-30737
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.0 and iPadOS 14.0. An application may be able to cause unexpected system termination or write kernel memory.
Patch / fix
- Apple iOS iOS 14.0 and iPadOS 14.0
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Check with FencerExploit prediction
1.13% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Affected products
- Apple iOS
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
support.apple.com
/HT211850
release-notes, vendor-advisory
-
seclists.org
/fulldisclosure/2020/Nov/20
mailing-list, third-party-advisory
Sources
- CVE List CVE-2020-9958
- NVD CVE-2020-9958
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