CVE-2023-42916An out-of-bounds read was addressed with improved input validation.
Updated under an hour ago ()
Does this affect you?
It affects Apple Safari and 7 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Dec 4, 2023; federal agencies had to remediate by Dec 25, 2023. Treat that date as your deadline.
Do this next
Free account, 1 product
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
- 6.5 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-125
- Known exploited
- Added to CISA KEV Dec 4, 2023; federal remediation due Dec 25, 2023Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 17.82% (percentile 97)
- Assigned by
- apple
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apple Safari apple:safari (from the name) | from unspecified before 17.1 | CNA record |
Apple macOS apple:macos (from the name) | from unspecified before 14.1 | CNA record |
Apple iOS and iPadOS apple:ios_and_ipados (from the name) | from unspecified before 17.1 | CNA record |
apple iphone_os apple:iphone_os | before 17.1.2 | CISA ADP |
apple ipados apple:ipados | before 17.1.2 | CISA ADP |
apple macos apple:macos | from 14.0.0 before 14.1.2 | CISA ADP |
apple safari apple:safari | before 17.1.2 | CISA ADP |
apple safari apple:safari | before 17.1.2 | NVD |
apple ipados apple:ipados | before 15.8.1; from 16.0 before 16.7.3; from 17.0 before 17.1.2 | NVD |
apple iphone_os apple:iphone_os | before 15.8.1; from 16.0 before 16.7.3; from 17.0 before 17.1.2 | NVD |
apple macos apple:macos | from 14.0 before 14.1.2 | NVD |
fedoraproject fedora fedoraproject:fedora | 38; 39 | NVD |
debian debian_linux debian:debian_linux | 11.0; 12.0 | NVD |
webkitgtk webkitgtk+ webkitgtk:webkitgtk+ | before 2.42.3 | NVD |
References
- https://support.apple.com/en-us/HT214033vendor-advisory
- https://support.apple.com/en-us/HT214032vendor-advisory
- https://support.apple.com/en-us/HT214031vendor-advisory
- https://support.apple.com/kb/HT214033vendor-advisory
- http://www.openwall.com/lists/oss-security/2023/12/05/1mailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P5LQS6VEI7VIZNC7QGQ62EOV45R5RJIR/mailing-list
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AD2KIHHCUBQC2YYH3FJWAHI5BG3QETOH/mailing-list
- https://support.apple.com/kb/HT214034vendor-advisory
- https://www.debian.org/security/2023/dsa-5575mailing-list
- http://seclists.org/fulldisclosure/2023/Dec/3mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2023/Dec/4mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2023/Dec/5mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2023/Dec/8mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2023/Dec/13mailing-list, third-party-advisory
- http://seclists.org/fulldisclosure/2023/Dec/12mailing-list, third-party-advisory
- https://security.gentoo.org/glsa/202401-04third-party-advisory
- https://support.apple.com/kb/HT214062vendor-advisory
- http://seclists.org/fulldisclosure/2024/Jan/35mailing-list, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-42916us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.