Exploited· due 2023-12-25
CVE-2023-42917
Apple Multiple Products
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.
Exploitation status
- CISA has confirmed this is being exploited in the wild. That is an observation of real attacks, not a prediction.
- US federal civilian agencies are required to remediate it by 2023-12-25. That deadline does not bind private companies, but it is a reasonable benchmark for how urgently CISA views it.
Required action
Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
CISA’s wording, unedited.
Scoring
- CVSS
- Not yet scored
Dates
- Published
- 2023-12-04
- Added to KEV
- 2023-12-04
- Remediation due
- 2023-12-25
- Sources
- CISA KEV