Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N R U H H H 8.8 .0930 95.2 YES
AFFECTED Product Versions Fixed Safari unspecified – — macOS unspecified – — iOS and iPadOS unspecified – —
TIMELINE Sep 14 Reserved by apple Nov 30 Published (CNA: apple) Dec 4 Added to CISA KEV, remediation due 2023-12-25
A memory corruption vulnerability was addressed with improved locking. 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 lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.
| Date | Event | Detail |
|---|---|---|
| September 14, 2023 | Reserved | Reserved by apple |
| November 30, 2023 | Published | Published (CNA: apple) |
| December 4, 2023 | KEV ADDED | Added to CISA KEV, remediation due 2023-12-25 |
Authoritative record: CVE-2023-42917 at cve.org
Vendors: apple
Weaknesses: CWE-787
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-42917 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
