← CVE Radar
CVE-2021-1879Apple iOS, iPadOS, and watchOS WebKit Cross-Site Scripting (XSS) Vulnerability
This issue was addressed by improved management of object lifetimes. This issue is fixed in iOS 12.5.2, iOS 14.4.2 and iPadOS 14.4.2, watchOS 7.3.3. Processing maliciously crafted web content may lead to universal cross site scripting. Apple is aware of a report that this issue may have been actively exploited..
6.1 MEDIUMEPSS 7.08%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 6.1 | MEDIUM | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| 4.3 | MEDIUM | 2.0NVD | AV:N/AC:M/Au:N/C:N/I:P/A:N |
CISA required action
⚡ Known exploited · remediation due Nov 17, 2021
Apply updates per vendor instructions.
Details
- CVE ID
- CVE-2021-1879
- Status
- Analyzed
- Assigner (CNA)
- apple
- Published
- Apr 2, 2021
- Last modified
- 2026-06-17 03:32 UTC
- Weaknesses
Affected Products
As published by the CNA in the CVE record.
AppleiOS and iPadOS1 version range
- before 14.4
AppleiOS1 version range
- before 12.5
ApplewatchOS1 version range
- before 7.3