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Vulnerability details: VCID-aj5q-xvf6-vfhv
Vulnerability ID VCID-aj5q-xvf6-vfhv
Aliases CVE-2021-30836
Summary An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.8 and iPadOS 14.8, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing a maliciously crafted audio file may disclose restricted memory.
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-125 Out-of-bounds Read
System Score Found at
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30836.json
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00215 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00221 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
epss 0.00221 https://api.first.org/data/v1/epss?cve=CVE-2021-30836
cvssv3.1 5.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-30836
cvssv3.1 5.5 https://nvd.nist.gov/vuln/detail/CVE-2021-30836
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30836.json
https://api.first.org/data/v1/epss?cve=CVE-2021-30836
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30809
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30836
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30848
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30849
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30858
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45482
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://support.apple.com/en-us/HT212814
https://support.apple.com/en-us/HT212815
https://support.apple.com/en-us/HT212819
https://support.apple.com/kb/HT212816
https://support.apple.com/kb/HT212869
http://www.openwall.com/lists/oss-security/2021/12/20/6
2034376 https://bugzilla.redhat.com/show_bug.cgi?id=2034376
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-2021-30836 https://nvd.nist.gov/vuln/detail/CVE-2021-30836
RHSA-2022:1777 https://access.redhat.com/errata/RHSA-2022:1777
RHSA-2025:10364 https://access.redhat.com/errata/RHSA-2025:10364
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30836.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:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N 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:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30836
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:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2021-30836
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 0.44149
EPSS Score 0.00215
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:39:50.250475+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.16/community.json 37.0.0