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CVE-2023-40420
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…
Medium6.5EPSS 1.4%
- Published
- Updated
- Reserved
- Assigned by
- apple
Description
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.
Timeline
ID reserved
By apple
- 43 days later
· 43 days later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.4% · top 27% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
- Processing web content may lead to a denial-of-service
Affected products
- affected unspecified – < 17
- affected unspecified – < 12.7
- affected unspecified – < 16.7
- affected unspecified – < 13.6
- affected unspecified – < 17
- affected unspecified – < 14
- affected unspecified – < 10
References (20)
- https://support.apple.com/en-us/HT213938 (opens in a new tab)x_transferred
- https://support.apple.com/en-us/HT213932 (opens in a new tab)x_transferred
- https://support.apple.com/en-us/HT213927 (opens in a new tab)x_transferred
- https://support.apple.com/en-us/HT213931 (opens in a new tab)x_transferred
- https://support.apple.com/en-us/HT213936 (opens in a new tab)x_transferred
- https://support.apple.com/en-us/HT213940 (opens in a new tab)x_transferred
- https://support.apple.com/en-us/HT213937 (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2023/Oct/5 (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2023/Oct/10 (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2023/Oct/6 (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2023/Oct/8 (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2023/Oct/9 (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2023/Oct/3 (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2023/Oct/4 (opens in a new tab)x_transferred
- https://support.apple.com/kb/HT213940 (opens in a new tab)
- https://support.apple.com/kb/HT213932 (opens in a new tab)
- https://support.apple.com/kb/HT213931 (opens in a new tab)
- https://support.apple.com/kb/HT213938 (opens in a new tab)
- https://support.apple.com/kb/HT213937 (opens in a new tab)
- https://support.apple.com/kb/HT213936 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-40420)Record last updated .