CVE-2023-40420 json
The issue was addressed with improved memory handling.
published 2023-09-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-44991
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.6, tvOS 17, iOS 16.7 and iPadOS 16.7, macOS Monterey 12.7, watchOS 10, iOS 17 and iPadOS 17, macOS Sonoma 14. Processing web content may lead to a denial-of-service.
Patch / fix
- Apple iOS and iPadOS 16.7, 17
- Apple macOS 12.7, 13.6, 14
- Apple tvOS 17
- Apple watchOS 10
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
1.42% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
Affected products
- Apple iOS and iPadOS
- Apple macOS
- Apple tvOS
- Apple watchOS
References
-
support.apple.com
/en-us/HT213938
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT213932
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT213927
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT213931
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT213936
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT213940
release-notes, vendor-advisory
-
support.apple.com
/en-us/HT213937
release-notes, vendor-advisory
-
seclists.org
/fulldisclosure/2023/Oct/5
mailing-list, third-party-advisory
-
seclists.org
/fulldisclosure/2023/Oct/10
mailing-list, third-party-advisory
- seclists.org /fulldisclosure/2023/Oct/6
- seclists.org /fulldisclosure/2023/Oct/8
- seclists.org /fulldisclosure/2023/Oct/9
- seclists.org /fulldisclosure/2023/Oct/3
- seclists.org /fulldisclosure/2023/Oct/4
- support.apple.com /kb/HT213940
- support.apple.com /kb/HT213932
- support.apple.com /kb/HT213931
- support.apple.com /kb/HT213938
- support.apple.com /kb/HT213937
- support.apple.com /kb/HT213936
Sources
- CVE List CVE-2023-40420
- NVD CVE-2023-40420
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.