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AEGLIX vulnerability intelligence

CVE-2021-1789

HIGH · CVSS 8.8 · Analyzed

Published: 2021-04-02 · Updated: 2026-06-17 · Source: NVD

Stored catalog record

Source record retrieved 2026-10-28T11:36:48.222482+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.

Vulnerability overview

A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code execution.

Patch review priority

Known exploitation: prioritize review

  • CISA KEV lists real-world exploitation.

FIRST EPSS: 13.98% · percentile 96.5 · score date 2026-10-27.

EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗

Severity and scoring

CVSS score
8.8 · HIGH
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-843

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Listed in CISA’s Known Exploited Vulnerabilities catalog.

Affected product
Apple · Multiple Products
Added to catalog
2022-05-04
Required action
Apply updates per vendor instructions.
CISA remediation due date
2022-05-25

CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*

    Before (exclusive): 14.4

  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

    Before (exclusive): 14.4

  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

    From (inclusive): 10.14

    Before (exclusive): 10.14.6

  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

    From (inclusive): 10.15

    Before (exclusive): 10.15.7

  • cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-004:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-005:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-006:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-007:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.14.6:supplemental_update_2:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*

  • cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*

  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

    From (inclusive): 11.0

    Before (exclusive): 11.2

  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*

    Before (exclusive): 14.4

  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

    Before (exclusive): 7.3

  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*

  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

  • cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*

    Before (exclusive): 2.30.6

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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