CVE-2021-1871 is a critical severity vulnerability with a CVSS score of 9.8. Exploits are available; patches have been released and should be applied urgently. This is classified as a zero-day vulnerability.
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Lower probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
Apple iOS, iPadOS, and macOS WebKit contain an unspecified logic vulnerability that allows a remote attacker to execute code. 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.
| Vendor | Product |
|---|---|
| Apple | Mac Os X |
| Apple | Ipados |
| Fedoraproject | Fedora |
| Apple | macOS |
| Debian | Debian Linux |
| Apple | iPhone Os |