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TI-2021-01572 Aliases CVE-2021-1870GHSA-f8fh-g8mv-p7hh

Apple iOS and iPadOS: A remote attacker may be able to cause arbitrary code execution

Priority CRITICAL 100Exploited in the wildPublished · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 3 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Why it matters now

Exploitation Active In CISA KEV since 2021-11-03CISA due date 2021-11-17
EPSS 0.0771 94th percentileScored 2026-11-07
Fix Partial iOS and iPadOS (Apple): 14.4macOS (Apple): 11.2Red Hat: 2 advisoriesRed Hat: 3 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AppleiOS and iPadOSbefore 14.414.4Patch availableCNA
ApplemacOSbefore 11.211.2Patch availableCNA
  • iOS and iPadOS VendorApple Affected before 14.4 Fixed in 14.4 Patch available CNA
  • macOS VendorApple Affected before 11.2 Fixed in 11.2 Patch available CNA

CPE configurations NVD · 10

CPEVersionsRoleVendor
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 14.4VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 14.4VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*10.15 to before 10.15.7VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*10.15.7VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*10.15.7 security_update_2020-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:*10.15.7 supplemental_updateVulnerableApple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*11.0.1 to before 11.2VulnerableApple
cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*before 2.30.6VulnerableWebKitGTK
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*32VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 14.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 14.4 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions 10.15 to before 10.15.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:* Versions 10.15.7 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:* Versions 10.15.7 security_update_2020-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:* Versions 10.15.7 supplemental_update Vulnerable ·Apple
  • cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 11.0.1 to before 11.2 Vulnerable ·Apple
  • cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:* Versions before 2.30.6 Vulnerable ·WebKitGTK
  • cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* Versions 32 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject

Remediation

  • Fix · CNA iOS and iPadOS (Apple) Fixed in 14.4
  • Fix · CNA macOS (Apple) Fixed in 11.2

Red Hat 2 advisories

  • RHSA-2025:10364 Released 2025-07-07 · Red Hat rating Important
    webkitgtk4 security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) webkitgtk4-2.48.3-2.el7_9, webkitgtk4-devel-2.48.3-2.el7_9, webkitgtk4-jsc-2.48.3-2.el7_9 +1
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) webkitgtk4-devel-2.48.3-2.el7_9, webkitgtk4-doc-2.48.3-2.el7_9, webkitgtk4-jsc-devel-2.48.3-2.el7_9
  • RHSA-2021:4381 Released 2021-11-09 · Red Hat rating Moderate
    GNOME security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) LibRaw-devel-0.19.5-3.el8
    • Red Hat Enterprise Linux AppStream (v. 8) LibRaw-0.19.5-3.el8, gnome-autoar-0.2.3-2.el8, webkit2gtk3-2.32.3-2.el8 +3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apple macOS 11.2

    60 records Highest priority Priority CRITICAL 3 CRITICAL, 3 MEDIUM, 54 LOW

    Other records, highest priority first

    • TI-2021-01502 Type confusion in Apple iOS and iPadOSPriority CRITICAL 97
    • TI-2021-01495 Apple iOS and iPadOS: A malicious application may be able to elevate privilegesPriority CRITICAL 90
    • TI-2021-01529 Apple iOS and iPadOS: A remote attacker may be able to cause unexpected application…Priority MEDIUM 47
    Show all 60 records →
  • Release ·

    Apple iOS and iPadOS 14.4

    49 records Highest priority Priority CRITICAL 3 CRITICAL, 1 HIGH, 6 MEDIUM, 39 LOW

    Other records, highest priority first

    • TI-2021-01502 Type confusion in Apple iOS and iPadOSPriority CRITICAL 97
    • TI-2021-01495 Apple iOS and iPadOS: A malicious application may be able to elevate privilegesPriority CRITICAL 90
    • TI-2021-01581 Cross-site scripting in Apple iOS and iPadOSPriority HIGH 84
    Show all 49 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:4381
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2025:10364
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2025:10364
Not affected: 4 products
  • Red Hat CodeReady Linux Builder (v. 8)
  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux AppStream (v. 8)
  • Red Hat Enterprise Linux BaseOS (v. 8)

Timeline

  1. 2021-11-03 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2021-1870
  3. 2026-10-03 Alias added: GHSA-f8fh-g8mv-p7hh

References

Advisory 5

  • TI-2025-28008 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-22441 Apple iOS and iPadOS: An attacker with arbitrary read and write capability may be able to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-22440 Memory corruption in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-17847 Use after free in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 10.0
  • TI-2022-06854 Out-of-bounds write in Apple iOS and iPadOS KEVCVSS 3.1CRITICAL 9.8
See all 2382 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences