Is It On KEV?

Apple Multiple Products

YES - ON THE CISA KEV LIST
CVE-2023-42917

Apple Multiple Products WebKit Memory Corruption Vulnerability

CISA catalog due date2023-12-25
overdue since 2023-12-25
EPSS exploit probability (next 30 days)9.3% · 95percentile
From CVE publication to KEV listing4 days (2023-11-30 → 2023-12-04)
Remediation window (KEV listing to due date)21 days
Days on the KEV list1073 days
Date added to KEV2023-12-04
Known ransomware campaign useUnknown
VendorApple
ProductMultiple Products
Weaknesses (CWE)CWE-787

Apple: 96 entries (5.4% of all KEV entries are from this vendor); 10 added in 2026.

BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.

Your BOD 26-04 window (SSVC tier helper)

Your remediation window ends:

Description

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.

Required action (CISA)

Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Notes

https://support.apple.com/en-us/HT214031, https://support.apple.com/en-us/HT214032, https://support.apple.com/en-us/HT214033 ; https://nvd.nist.gov/vuln/detail/CVE-2023-42917

References

Other KEV entries for this vendor: Apple

Apple - Vendors with KEV entries

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