WEB-CLIENT Apple WebKit Use After Free Vulnerability (CVE-2021-30858)

Rule ID

1237274

Severity

High

Description

Apple iOS, iPadOS, and macOS WebKit contain a use-after-free 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.

Impact

Remote code execution

Recommendation

Update vendor's patch.

IPS Category

Exploits

IPS Anomaly Group

N/A

IPS Rule Default Action

Deny

References

CVE-2021-30858

T1203

T0863

Keywords

N/A

Date Created

2025/08/27

Last Updated

2025/08/29