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Vulnerability details: VCID-41pa-mvks-c3fh
Vulnerability ID VCID-41pa-mvks-c3fh
Aliases CVE-2021-30758
Summary A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to arbitrary code execution.
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30758.json
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
epss 0.00973 https://api.first.org/data/v1/epss?cve=CVE-2021-30758
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30758
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30758
archlinux Medium https://security.archlinux.org/AVG-2218
archlinux Medium https://security.archlinux.org/AVG-2219
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30758.json
https://api.first.org/data/v1/epss?cve=CVE-2021-30758
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21775
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21779
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30663
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30665
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30689
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30720
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30734
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30744
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30749
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30758
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30795
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30797
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30799
https://support.apple.com/en-us/HT212601
https://support.apple.com/en-us/HT212602
https://support.apple.com/en-us/HT212604
https://support.apple.com/en-us/HT212605
https://support.apple.com/en-us/HT212606
1986892 https://bugzilla.redhat.com/show_bug.cgi?id=1986892
AVG-2218 https://security.archlinux.org/AVG-2218
AVG-2219 https://security.archlinux.org/AVG-2219
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
CVE-2021-30758 https://nvd.nist.gov/vuln/detail/CVE-2021-30758
RHSA-2021:4381 https://access.redhat.com/errata/RHSA-2021:4381
RHSA-2025:10364 https://access.redhat.com/errata/RHSA-2025:10364
USN-5024-1 https://usn.ubuntu.com/5024-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30758.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30758
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30758
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.7572
EPSS Score 0.00973
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:29:51.971657+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.14/community.json 37.0.0