CVE-2023-42916
MEDIUMCISA KEVEPSS 97th pctlDescription
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.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Exploit Intelligence
Very high risk: more likely to be exploited than 97% of all known CVEs.
Apple Multiple Products WebKit Out-of-Bounds Read Vulnerability
Apple iOS, iPadOS, macOS, and Safari WebKit contain an out-of-bounds read vulnerability that may disclose sensitive information when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Remediation due: 2023-12-25
References
- http://seclists.org/fulldisclosure/2023/Dec/12
- http://seclists.org/fulldisclosure/2023/Dec/13
- 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/2024/Jan/35
- http://www.openwall.com/lists/oss-security/2023/12/05/1
- https://lists.fedoraproject.org/archives/list/[email protected]/message/AD2KIHHCUBQC2YYH3FJWAHI5BG3QETOH/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/P5LQS6VEI7VIZNC7QGQ62EOV45R5RJIR/
- https://security.gentoo.org/glsa/202401-04
- https://support.apple.com/en-us/HT214031
- https://support.apple.com/en-us/HT214032
- https://support.apple.com/en-us/HT214033
- https://support.apple.com/kb/HT214033
- https://support.apple.com/kb/HT214034
- https://support.apple.com/kb/HT214062
- https://www.debian.org/security/2023/dsa-5575
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-42916
Find and fix vulnerabilities across your fleet
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-23.