CVE-2021-30761 KEV
8.8
HIGH · CVSS 3.1 · EPSS 10.5% (pctl 96)
Patch first
On CISA KEV — known exploited in the wild, due 2021-11-17.
Description
A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 12.5.4. 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..
Scoring
| CVSS | 8.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 10.55% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | yes — remediate by 2021-11-17 |
| Public exploit | none known |
| Published | 2021-09-08 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Apple iOS WebKit Memory Corruption Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2021-11-17 |
| Vendor / product | Apple / iOS |
| Ransomware use | none reported |
Affected (1)
| Vendor | Product |
|---|---|
| apple | iphone os |
References
→ the Explorer · watch your stack · NVD