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CVE-2021-30657 (GCVE-0-2021-30657)

Vulnerability from cvelistv5 – Published: 2021-09-08 14:49 – Updated: 2025-10-21 23:25
VLAI CISA Previdian
Summary
A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A malicious application may bypass Gatekeeper checks. Apple is aware of a report that this issue may have been actively exploited..
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
SSVC
Exploitation: active Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-29 17:24 UTC
CWE
  • A malicious application may bypass Gatekeeper checks. Apple is aware of a report that this issue may have been actively exploited.
  • CWE-862 - Missing Authorization
Assigner
References
Impacted products
Vendor Product Version CPE status
Apple macOS Affected: unspecified , < 11.3 (custom)
guessed Create a notification for this product.
Apple macOS Affected: unspecified , < 2021 (custom)
guessed Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 80d28f28-abb2-460e-8f06-a3fb22c4b3d7

Vulnerability ID: CVE-2021-30657

Status: Confirmed

Status Updated: 2021-11-03 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEV entry: Apple macOS Unspecified Vulnerability | Affected: Apple / macOS | Description: Apple macOS contains an unspecified logic issue in System Preferences that may allow a malicious application to bypass Gatekeeper checks. | Required action: Apply updates per vendor instructions. | Due date: 2021-11-17 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-30657
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-862
Feed CISA Known Exploited Vulnerabilities Catalog
Product macOS
Due Date 2021-11-17
Date Added 2021-11-03
Vendorproject Apple
Vulnerabilityname Apple macOS Unspecified Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:28 UTC | Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 0c98196a-5aa2-4180-b379-ec3c4f58f996

Vulnerability ID: CVE-2021-30657

Status: Confirmed

Status Updated: 2021-11-03 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEVIntel entry: A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A... | Affected: Apple / macOS | CVSS: 5.5 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A...
Vendor Apple
Product macOS
Added Date 2021-11-03T00:00:00.000Z
Cvss Score 5.5
Epss Score None
Cvss Severity MEDIUM
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:04 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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Apple presenta conocimiento de un informe que indica que este problema puede haber sido explotado activamente\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:P/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"cisaExploitAdd\":\"2021-11-03\",\"cisaActionDue\":\"2021-11-17\",\"cisaRequiredAction\":\"Apply updates per vendor instructions.\",\"cisaVulnerabilityName\":\"Apple macOS Unspecified Vulnerability\",\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"10.15\",\"versionEndIncluding\":\"10.15.5\",\"matchCriteriaId\":\"DA6AB65C-6C48-4C3B-BBAB-0F64618738A2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:10.15.6:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"EF833C94-F436-407F-A3DA-32BE68A493C4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:10.15.6:supplemental_update:*:*:*:*:*:*\",\"matchCriteriaId\":\"2E5A4D99-706D-4B12-9D41-13A480B3DF0D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"A654B8A2-FC30-4171-B0BB-366CD7ED4B6A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*\",\"matchCriteriaId\":\"F12CC8B5-C1EB-419E-8496-B9A3864656AD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*\",\"matchCriteriaId\":\"F1F4BF7F-90D4-4668-B4E6-B06F4070F448\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*\",\"matchCriteriaId\":\"7FD7176C-F4D1-43A7-9E49-BA92CA0D9980\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*\",\"matchCriteriaId\":\"2703DE0B-8A9E-4A9D-9AE8-028E22BF47CA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*\",\"matchCriteriaId\":\"C1C795B9-E58D-467C-83A8-2D45C792292F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"11.0\",\"versionEndExcluding\":\"11.3\",\"matchCriteriaId\":\"4E699CCC-31F5-458E-A59C-79B3AF143747\"}]}]}],\"references\":[{\"url\":\"https://support.apple.com/en-us/HT212325\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212326\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212325\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/HT212326\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30657\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"tags\":[\"Third Party Advisory\",\"US Government Resource\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2026-03-27T14:11:58+00:00",
      "cve": "CVE-2021-30657",
      "id": "CVE-2021-30657",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-30657",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-30657.json",
      "version": "3"
    },
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.