Unrated severityCISA KEVNVD Advisory· Published Aug 24, 2021· Updated Oct 21, 2025
CVE-2021-30858
CVE-2021-30858
Description
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. 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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
46<11.6+ 1 more
- (no CPE)range: <11.6
- (no CPE)range: unspecified
- Range: <14.8
<14.8+ 1 more
- (no CPE)range: <14.8
- (no CPE)range: unspecified
- osv-coords41 versionspkg:rpm/opensuse/gtk3&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/webkit2gtk3&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/webkit2gtk3&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/webkit2gtk3&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP3pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP2pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCLpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Manager%20Proxy%204.1pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Manager%20Server%204.1pkg:rpm/suse/webkit2gtk3&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/webkit2gtk3&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/webkit2gtk3&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/webkit2gtk3&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 2.32.4-1.1+ 40 more
- (no CPE)range: < 2.32.4-1.1
- (no CPE)range: < 2.32.4-lp152.2.19.1
- (no CPE)range: < 2.32.4-12.3
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.32.4-12.3
- (no CPE)range: < 2.32.4-12.3
- (no CPE)range: < 2.32.4-12.3
- (no CPE)range: < 2.32.4-12.3
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.32.4-3.82.1
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-2.71.2
- (no CPE)range: < 2.32.4-2.71.2
Patches
Vulnerability mechanics
References
18- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BO6DMTHZR57JDBOXPSNR2MKDMCRWV265/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XYNV7ASK4LQVAUMJXNXBS3Z7RVDQ2N3W/mitrevendor-advisoryx_refsource_FEDORA
- www.debian.org/security/2021/dsa-4975mitrevendor-advisoryx_refsource_DEBIAN
- www.debian.org/security/2021/dsa-4976mitrevendor-advisoryx_refsource_DEBIAN
- seclists.org/fulldisclosure/2021/Sep/25mitremailing-listx_refsource_FULLDISC
- seclists.org/fulldisclosure/2021/Sep/27mitremailing-listx_refsource_FULLDISC
- seclists.org/fulldisclosure/2021/Sep/29mitremailing-listx_refsource_FULLDISC
- seclists.org/fulldisclosure/2021/Sep/38mitremailing-listx_refsource_FULLDISC
- seclists.org/fulldisclosure/2021/Sep/39mitremailing-listx_refsource_FULLDISC
- seclists.org/fulldisclosure/2021/Sep/50mitremailing-listx_refsource_FULLDISC
- www.openwall.com/lists/oss-security/2021/09/20/1mitremailing-listx_refsource_MLIST
- www.openwall.com/lists/oss-security/2021/10/26/9mitremailing-listx_refsource_MLIST
- www.openwall.com/lists/oss-security/2021/10/27/1mitremailing-listx_refsource_MLIST
- www.openwall.com/lists/oss-security/2021/10/27/2mitremailing-listx_refsource_MLIST
- www.openwall.com/lists/oss-security/2021/10/27/4mitremailing-listx_refsource_MLIST
- support.apple.com/en-us/HT212804mitrex_refsource_MISC
- support.apple.com/en-us/HT212807mitrex_refsource_MISC
- support.apple.com/kb/HT212824mitrex_refsource_CONFIRM
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