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Apple Multiple Products: 2 exploited vulnerabilities (CVE-2023-42916, CVE-2023-42917)

Apple Multiple Products

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. Apple iOS, iPadOS, macOS, and Safari WebKit contain a memory corruption vulnerability that leads to code execution 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. Added to CISA KEV on 2023-12-04.

Why this severity: CVSS 8.8 (NVD), actively exploited (CISA KEV)

Started
Dec 4, 2023
Closed
Dec 4, 2023

Follow this incident

Affected

  • See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

  • See vendor advisory linked in sources

Timeline2

  1. CISA added CVE-2023-42916 to the KEV catalog (due 2023-12-25).

  2. CISA added CVE-2023-42917 to the KEV catalog (due 2023-12-25).

Advisories4

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier). Grouped: same vendor/product added to KEV on the same day.

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