CISA KEV · catalog date Nov 3, 2021 · first observed Jul 19, 2026
Evidence dossier
CVE-2021-30869
A type confusion issue was addressed with improved state handling.
Exploited in the wild (CISA KEV since Nov 3, 2021). NVD reports CVSS 3.1 7.8. EPSS estimates 4.2% exploit likelihood as of Aug 27, 2026.
As of Aug 27, 2026
Normalized restatement
A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.
- State
- PUBLISHED
- Published
- Aug 24, 2021
- Updated
- Oct 21, 2025
- Evidence coverage
- 98%
Evidence chronology
What was known when
- Source dateSource date omittedFirst observed by CASCAappleOriginal evidence ↗
Record text: A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.
Inspect raw assertion
- Field
container- Value
- A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.
- Source dateSource date omittedFirst observed by CASCACISA-ADPOriginal evidence ↗
Record text: CISA ADP Vulnrichment
Inspect raw assertion
- Field
container- Value
- CISA ADP Vulnrichment
- Source dateSource date omittedFirst observed by CASCACVE ProgramOriginal evidence ↗
Record text: CVE Program Container
Inspect raw assertion
- Field
container- Value
- CVE Program Container
- Source dateFirst observed by CASCACISA KEVOriginal evidence ↗
Exploitation cataloged: Apple iOS, iPadOS, and macOS Type Confusion Vulnerability
Inspect raw assertion
- Field
observed_exploitation- Value
- Apple iOS, iPadOS, and macOS Type Confusion Vulnerability
- Source dateFirst observed by CASCAFIRST EPSSOriginal evidence ↗
EPSS score: 4.15% probability · 90.11th percentile
Inspect raw assertion
- Field
model_probability- Value
- Probability 0.041500000000; percentile 0.901130000000
FIRST EPSS · score date Aug 27, 2026 · 90.1th percentile · first observed Aug 27, 2026
NVD · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot
Evidence detail
Source limits and decisions
Why each evidence state has this value
casca-unknown-reasons-v1Eligible evidence is present for this bounded claim.
- Revision
- evidence-policy-v1.1.0
- Cutoff
- Aug 27, 2026
- Resolution
- None
Eligible evidence is present for this bounded claim.
- Revision
- evidence-policy-v1.1.0
- Cutoff
- Aug 27, 2026
- Resolution
- None
Eligible evidence is present for this bounded claim.
- Revision
- casca-direct-cvss-eligibility-v1
- Cutoff
- Aug 27, 2026
- Resolution
- None
The cited source assertion is retained while canonical product linkage remains open.
- Revision
- casca-factor-d-obligations-v1
- Cutoff
- Aug 27, 2026
- Resolution
- Resolve identity
Source comparison
Who said what
A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.
Inspect raw assertion
- Field
container- Value
- A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.
CISA ADP Vulnrichment
Inspect raw assertion
- Field
container- Value
- CISA ADP Vulnrichment
CVE Program Container
Inspect raw assertion
- Field
container- Value
- CVE Program Container
Apple iOS, iPadOS, and macOS Type Confusion Vulnerability
Inspect raw assertion
- Field
observed_exploitation- Value
- Apple iOS, iPadOS, and macOS Type Confusion Vulnerability
4.15% probability · 90.11th percentile
Inspect raw assertion
- Field
model_probability- Value
- Probability 0.041500000000; percentile 0.901130000000
Applicability
Cited product scope
Grouped from 1 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.
Identity source boundaries
- Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z
27d65b0f-b718-4b4f-bb79-c47c68d09dfa - Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z
955dae73-7302-438b-aee1-058d7cc5d48e
8 scope groups
Canonical linkage remains open; the cited source assertion is retained below.
Inspect raw assertion
[{"status": "affected", "version": "unspecified", "lessThan": "14.4", "versionType": "custom"}]Canonical linkage remains open; the cited source assertion is retained below.
Inspect raw assertion
[{"status": "affected", "version": "unspecified", "lessThan": "11.2", "versionType": "custom"}]Canonical linkage remains open; the cited source assertion is retained below.
Inspect raw assertion
[{"status": "affected", "version": "unspecified", "lessThan": "12.5", "versionType": "custom"}]Canonical linkage remains open; the cited source assertion is retained below.
Inspect raw assertion
[{"status": "affected", "version": "unspecified", "lessThan": "2021", "versionType": "custom"}]product-8e7094ac066248cd4828b6ec8e3a96d010ed1c68f6083af46638775d737da0adLinked exactInspect raw assertion
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 0
- Logic
- OR
- Version bounds
- through excluding 14.4
- Match ID
17aaea98-4c05-496e-81a7-ac031fcddda5
product-665d7155d02581979844685e7fca6c2680af997f9200af455887b1c71c483272Linked exactInspect raw assertions
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 1
- Logic
- OR
- Version bounds
- from including 12.0; through excluding 12.5.5
- Match ID
5527d436-59ea-4acb-8828-1d62bdebcaad
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 2
- Logic
- OR
- Version bounds
- from including 14.0; through excluding 14.4
- Match ID
859d3e28-13cd-4b6d-a831-2d2521486e44
product-d6f53ba981bb58ea2b0d24855b8ff4a18555e3a17a9dce0d38460a69537bbc63Linked exactInspect raw assertion
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 28
- Logic
- OR
- Version bounds
- from including 11.0; through excluding 11.2
- Match ID
9b0973f4-d921-4060-9384-43d176f26967
product-94613e1f5039e71a9805f20421d56ac6a61e2707d3f97a08fdf6823a65dc7b76Linked exactInspect raw assertions
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 20
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
f1f4bf7f-90d4-4668-b4e6-b06f4070f448
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 13
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
518bb47b-dd76-4e8c-9f10-7ebc1e146191
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 17
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
9cdb4476-b521-43e4-a129-8718a8e0a8cd
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 21
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
7fd7176c-f4d1-43a7-9e49-ba92ca0d9980
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 11
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
0fd3467d-7679-479f-9c0b-a93f7cd0929d
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 5
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
cfe26ecc-a2c2-4501-9950-510de0e1bd86
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 22
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
2703de0b-8a9e-4a9d-9ae8-028e22bf47ca
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 25
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
3456176f-9185-4ee2-a8ce-3d989d674ab7
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 24
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
a54d63b7-b92b-47c3-b1c5-9892e5873a98
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 10
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
c68ae52b-5139-40a4-ae9a-e752dbf07d1b
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 9
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
0d5d1970-6d2a-42ca-a203-42023d71730d
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 3
- Logic
- OR
- Version bounds
- from including 10.14; through including 10.14.6
- Match ID
3cb29e85-e401-4492-973c-b3116ecdde36
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 4
- Logic
- OR
- Version bounds
- from including 10.15; through including 10.15.6
- Match ID
141a3268-dbd7-4f40-8be4-cf8d9a0df3e1
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-005:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 26
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
d337ee21-2f00-484d-9285-f2b0248d7a19
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 14
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
63940a55-d851-46eb-9668-d82befc1fe95
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 12
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
d4c6098e-edbd-4a85-8282-b2e9d9333872
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 19
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
f12cc8b5-c1eb-419e-8496-b9a3864656ad
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 16
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
6d69914d-46c7-4a0e-a075-c863c1692d33
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 8
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
510f8317-94da-498e-927a-83d5f41af54a
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 23
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
d425c653-37a2-448c-bf2f-b684adb08a26
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 6
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
26108bef-0847-4ab0-bd98-35344dfa7835
cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 18
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
a654b8a2-fc30-4171-b0bb-366cd7ed4b6a
cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 27
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
c1c795b9-e58d-467c-83a8-2d45c792292f
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 7
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
a369d48b-6a0a-47ae-9513-d5e2e6f30931
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 15
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
68c7a97a-3801-44fa-96ca-10298fa39883
Affected-product evidence
Accepted scope and product mapping
4 canonical links · 1 source-reported links
vendor-d6ed6f1e35de2e16a8a10f2ae364dab009bb2afadd609071b20da24d60ce2829 · product-665d7155d02581979844685e7fca6c2680af997f9200af455887b1c71c483272
- Source class
- Nvd cpe vulnerable target
- Assertions
- 2
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
774aa0fc-af75-4beb-80f0-4ef2f9874bbea018c2ee-7b6e-4956-8fc0-6d05b1acab10vendor-d6ed6f1e35de2e16a8a10f2ae364dab009bb2afadd609071b20da24d60ce2829 · product-8e7094ac066248cd4828b6ec8e3a96d010ed1c68f6083af46638775d737da0ad
- Source class
- Nvd cpe vulnerable target
- Assertions
- 1
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
641ffbe3-c3a4-48d7-b105-d53738c02004vendor-d6ed6f1e35de2e16a8a10f2ae364dab009bb2afadd609071b20da24d60ce2829 · product-94613e1f5039e71a9805f20421d56ac6a61e2707d3f97a08fdf6823a65dc7b76
- Source class
- Nvd cpe vulnerable target
- Assertions
- 25
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
07144b9b-974a-4e30-8f4d-59d6cc7f257417ff6c13-1348-469d-8c7f-f731ac092163294e7ad8-7b28-4f52-82c3-0c30ac8235ed2f74789a-23cf-4869-b571-2318f5b3a72e31a60991-c170-4d34-9611-9d50771f98d85246112c-6826-4abc-b637-0f569901d9b26370403e-79ab-41b2-bf55-89733d0ec5807416dd00-25f2-475d-99cb-56a61ab61e14832b47df-6940-47b2-87cb-98614715fa7787bd9ca2-5ee7-4bb3-b390-4e21488da18e95283163-4b74-4a0a-af50-0a47860c74609ff5afe9-ee6f-4a23-87c2-882cff07129ea2e31a37-6aa5-4015-a1fd-c77c683d0842b00ca923-28a1-400d-a238-39d423e252edb265610f-05af-424e-bd5e-c6cd5ffa6a1cb626da16-77be-484e-8008-5712eb4f3b38c3531aef-a508-4052-912f-29bcdbd2a806c8d9ebdf-ea71-421a-9a83-c60f4f1ac18cd03ca0f4-90a0-42d7-98da-f33b292c9f5cde7625db-2cbd-4a57-b404-2b513e19ea1ae0b7d8dd-f57f-48b2-b9a8-0ef3516a46d9e28deab0-1a20-41dd-a294-d378a9085e6aed9fb363-27cf-4d7d-9225-f0229837f1c3f9a4aeb8-742b-4638-b031-351564369ccbfd32222b-e0ed-406e-9516-145b3d1a0c39vendor-d6ed6f1e35de2e16a8a10f2ae364dab009bb2afadd609071b20da24d60ce2829 · product-d6f53ba981bb58ea2b0d24855b8ff4a18555e3a17a9dce0d38460a69537bbc63
- Source class
- Nvd cpe vulnerable target
- Assertions
- 1
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
4ca166f7-6eed-44b9-a56a-404161340690Canonical linkage remains open; the cited source assertion is retained below.
Vendor specified only by source · Product specified only by source
- Source class
- Direct cve affected
- Assertions
- 4
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
66501833-5d90-4610-9e42-715d187802859876851a-4265-4953-b712-bad7c47c5240bb97a128-0840-4ba6-a72e-eed1c72e8fdfbdc0ac7a-fe2f-4d0c-9d43-dbdb3bad5c30Assessments
CVSS by origin
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HAV:N/AC:M/Au:N/C:C/I:C/A:CCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HDirect CVE/CNA normalized decisions
CISA-ADP
CVSS 3.1 · Secondary · Independent enrichment · rank 2
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Validation
- Valid match
- Recomputed
- 7.8
- Decision reason
- Evidence supported
- Policy
- casca-direct-cvss-eligibility-v1
Assessments are retained side by side under closed precedence. Cascade never averages CVSS.
Evidence boundaries
- KEV membership is authoritative for the catalog, not proof of exposure in any environment.
- EPSS is a dated model probability and not an individual-environment prediction.
- Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
- NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
- Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
- NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
- Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
- OSV aggregation and OSV-converted NVD material are not independent corroboration.
- Red Hat facts are vendor assertions for the exact supplied products.
- Nonmembership and not-yet-observed states are not proof of safety.