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Vulnerability details: VCID-absn-3yjh-aaas
Vulnerability ID VCID-absn-3yjh-aaas
Aliases CVE-2021-30818
Summary A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, iOS 15 and iPadOS 15, Safari 15, watchOS 8. 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
rhas Moderate https://access.redhat.com/errata/RHSA-2022:1777
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30818.json
epss 0.00285 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00285 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00285 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00285 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00285 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00285 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00319 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
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epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
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epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
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epss 0.00323 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00324 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00380 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00380 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00380 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00380 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00422 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00649 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
epss 0.00712 https://api.first.org/data/v1/epss?cve=CVE-2021-30818
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=2034368
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30846
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30851
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42762
cvssv3.1 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30818
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30818
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30818
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30818.json
https://api.first.org/data/v1/epss?cve=CVE-2021-30818
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30818
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30823
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30846
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30851
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30884
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30888
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30889
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42762
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45481
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45483
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://support.apple.com/en-us/HT212807
https://support.apple.com/en-us/HT212814
https://support.apple.com/en-us/HT212815
https://support.apple.com/en-us/HT212816
https://support.apple.com/en-us/HT212819
https://support.apple.com/kb/HT212869
http://www.openwall.com/lists/oss-security/2021/12/20/6
2034368 https://bugzilla.redhat.com/show_bug.cgi?id=2034368
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:ipados:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
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-2021-30818 https://nvd.nist.gov/vuln/detail/CVE-2021-30818
GLSA-202202-01 https://security.gentoo.org/glsa/202202-01
RHSA-2022:1777 https://access.redhat.com/errata/RHSA-2022:1777
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-2021-30818.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: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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-2021-30818
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-2021-30818
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: 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-2021-30818
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 0.48967
EPSS Score 0.00285
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.