CVE-2021-30666
HIGH8.8⚠ KEVEPSS 1.2%Apple iOS WebKit Buffer Overflow Vulnerability
Published: 9/8/2021Modified: 4/28/2026Added to CISA KEV: 11/3/2021
Description
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
Affected packages (2)
- Debian/webkit2gtkfrom 0, < 2.26.1-2
- Debian/wpewebkitfrom 0, < 2.26.3-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |