Unrated severityCISA KEVNVD Advisory· Published Sep 8, 2021· Updated Oct 21, 2025
CVE-2021-30666
CVE-2021-30666
Description
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3. 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
40= 12.5.3+ 1 more
- (no CPE)range: = 12.5.3
- (no CPE)range: unspecified
- osv-coords38 versionspkg:rpm/opensuse/gtk3&distro=openSUSE%20Tumbleweedpkg: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%20SP3pkg: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+ 37 more
- (no CPE)range: < 2.32.4-1.1
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-3.92.1
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-3.92.1
- (no CPE)range: < 2.34.3-3.92.1
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-3.92.1
- (no CPE)range: < 2.34.3-3.92.1
- (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: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-3.92.1
- (no CPE)range: < 2.34.3-3.92.1
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-3.92.1
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-3.92.1
- (no CPE)range: < 2.34.3-3.92.1
- (no CPE)range: < 2.34.3-23.3
- (no CPE)range: < 2.34.3-2.82.1
- (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: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-2.82.1
- (no CPE)range: < 2.34.3-2.82.1
Patches
Vulnerability mechanics
References
1- support.apple.com/en-us/HT212341mitrex_refsource_MISC
News mentions
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