VIR Vulnerability Intelligence Relay

CVE-2021-1879

unknown KEV
Published 2021-11-03 · Modified 2021-11-03
CVSS v3
—
CVSS v2
—
VIR risk
1.5

Description

Apple iOS, iPadOS, and watchOS WebKit contain an unspecified vulnerability that allows for universal cross-site scripting (XSS) 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.

CISA KEV

Vendor
Apple
Product
iOS, iPadOS, and watchOS
Due date
2021-11-17

Predictions

Exploit likelihood
99%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: cisa-kev — https://nvd.nist.gov/vuln/detail/CVE-2021-1879

Exploits

References

Verify integrity in audit chain (admin only). AS-IS.