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Vulnerability · Published Oct 28, 2021 · Assigned by apple

CVE-2021-30809

High 8.8

In plain English

A high-severity security flaw in iOS and iPadOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)8.8High
Exploit odds (30 days)1.5%top 25.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Public PoC

Official description

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to arbitrary code execution.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8webkit2gtk32.34.6-1.el8ALSA-2022:1777
AlmaLinux:8webkit2gtk3-devel2.34.6-1.el8ALSA-2022:1777
AlmaLinux:8webkit2gtk3-jsc2.34.6-1.el8ALSA-2022:1777
AlmaLinux:8webkit2gtk3-jsc-devel2.34.6-1.el8ALSA-2022:1777
Alpine:v3.20webkit2gtk2.32.4-r0ALPINE-CVE-2021-30809
Debian:12webkit2gtk2.32.4-1DEBIAN-CVE-2021-30809
Debian:13webkit2gtk2.32.4-1DEBIAN-CVE-2021-30809
Debian:14webkit2gtk2.32.4-1DEBIAN-CVE-2021-30809
Debian:12wpewebkit2.32.4-1DEBIAN-CVE-2021-30809
Debian:13wpewebkit2.32.4-1DEBIAN-CVE-2021-30809
Debian:14wpewebkit2.32.4-1DEBIAN-CVE-2021-30809
Rocky Linux:8webkit2gtk30:2.34.6-1.el8RLSA-2022:1777
Ubuntu:22.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2021-30809
Ubuntu:24.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2021-30809
Ubuntu:22.04:LTSwpewebkitno fix listedUBUNTU-CVE-2021-30809

Affected products (as reported)

VendorProductVersions
Apple iOS and iPadOS unspecified – before 15
Apple tvOS unspecified – before 15
Apple Safari unspecified – before 15
Apple watchOS unspecified – before 8

References