Medium 6.5Known exploited (CISA KEV)Published Nov 30, 2023

CVE-2023-42916An out-of-bounds read was addressed with improved input validation.

Updated under an hour ago (Oct 26, 2026, 7:30 PM ET)

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.

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Every CVE for Apple Safari

Exploited in the last 30 days

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

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
1–10 of 14

References

References

https://support.apple.com/en-us/HT214033	vendor-advisory
https://support.apple.com/en-us/HT214032	vendor-advisory
https://support.apple.com/en-us/HT214031	vendor-advisory
https://support.apple.com/kb/HT214033	vendor-advisory
http://www.openwall.com/lists/oss-security/2023/12/05/1	mailing-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/HT214034	vendor-advisory
https://www.debian.org/security/2023/dsa-5575	mailing-list
http://seclists.org/fulldisclosure/2023/Dec/3	mailing-list, third-party-advisory
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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.