CVE-2021-1879 · netVigilance record NV21-0189

Apple iOS, iPadOS, and watchOS WebKit Cross-Site Scripting (XSS)

past due

What to do

Apply updates per vendor instructions.

CISA deadline 2021-11-17 · passed 4 years 9 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

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.

Who is affected

Apple iOS, iPadOS, and watchOS. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-79.

Timeline

2021-11-03
Added to CISA KEVExploitation in the wild confirmed by CISA
2021-11-17
CISA remediation deadlinepassed 4 years 9 months ago

Sources

NVD entry for CVE-2021-1879 nvd.nist.gov/vuln/detail/CVE-2021-1879
CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2021-1879