CVE-2020-9958 json
An out-of-bounds write issue was addressed with improved bounds checking.
published 2020-10-16 6 y ago modified 2026-06-17 4 mo 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
Exploit prediction
1.13% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
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
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.