CVE-2023-42916

6.5 MEDIUM 18% exploit odds exploited in the wild Fix listed Memory safety Browser & mail

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in, but needs a user to act. High risk of data exposure.
In the wild: CISA lists this as exploited in real attacks. Treat as urgent.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2023-09-14 19:05 UTC ReservedThe CVE id was reserved by its CNA
2023-11-30 23:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2023-12-04 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
2023-12-25 Remediation deadlineCISA's due date for federal agencies to fix it
2026-06-17 06:24 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
Exploit odds: 17.8% in the next 30 days (EPSS).
Severity: 6.5 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2023-11-30 23:15 UTC
Last modified: 2026-06-17 06:24 UTC
Added to CISA KEV: 2023-12-04
Exploit probability: 17.8% · EPSS, next 30 days
Weakness: CWE-125 · Out-of-bounds read
Record status: Analyzed

Affected

Apple Safari < 17.1.2
Apple Ipados < 15.8.1
Apple Ipados < 16.7.3
Apple Ipados < 17.1.2
Apple Iphone Os < 15.8.1
Apple Iphone Os < 16.7.3
Apple Iphone Os < 17.1.2
Apple macOS < 14.1.2

Attack profile CVSS 3.1 · 6.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record