CVE-2023-42916
Apple Multiple Products WebKit Out-of-Bounds Read Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
CISA notes
https://support.apple.com/en-us/HT214031, https://support.apple.com/en-us/HT214032, https://support.apple.com/en-us/HT214033 ; https://nvd.nist.gov/vuln/detail/CVE-2023-42916
Description
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitation Context
as of October 13, 2026- CISA added CVE-2023-42916 to the KEV catalog 4 days after its CVE record was published. The median for entries added in 2023 is 12 days.
- It is one of 95 Apple entries in the CISA KEV catalog, and one of 21 added in 2023.
- Its current EPSS score (17.8%) is higher than that of 33% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Apple | Apple Safari | unspecified to <17.1 |
| Apple | Apple macOS | unspecified to <14.1 |
| Apple | Apple iOS and iPadOS | unspecified to <17.1 |
References
18 Links- https://support.apple.com/en-us/HT214033
- https://support.apple.com/en-us/HT214032
- https://support.apple.com/en-us/HT214031
- https://support.apple.com/kb/HT214033
- http://www.openwall.com/lists/oss-security/2023/12/05/1
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P5LQS6VEI7VIZNC7QGQ62EOV45R5RJIR/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AD2KIHHCUBQC2YYH3FJWAHI5BG3QETOH/
- https://support.apple.com/kb/HT214034
- https://www.debian.org/security/2023/dsa-5575
- http://seclists.org/fulldisclosure/2023/Dec/3
- http://seclists.org/fulldisclosure/2023/Dec/4
- http://seclists.org/fulldisclosure/2023/Dec/5
- http://seclists.org/fulldisclosure/2023/Dec/8
- http://seclists.org/fulldisclosure/2023/Dec/13
- http://seclists.org/fulldisclosure/2023/Dec/12
- https://security.gentoo.org/glsa/202401-04
- https://support.apple.com/kb/HT214062
- http://seclists.org/fulldisclosure/2024/Jan/35
Record Details
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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.