TI-2024-27245 Aliases CVE-2024-40866 GHSA-h9cp-5vvc-8wqc

Apple Safari: Visiting a malicious website may lead to address bar spoofing

LOW 31Published 2024-09-16 · Updated 2026-04-02

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: Partial Red Hat: 4 fixed, 1 without a fix

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

Summary

The issue was addressed with improved UI. This issue is fixed in Safari 18, macOS Sequoia 15. Visiting a malicious website may lead to address bar spoofing.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00933 60th percentileScored 2026-11-07

Fix Partial Safari (Apple): 18macOS (Apple): 15Red Hat: 4 advisoriesRed Hat: 4 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apple	Safari	before 18	18	Patch available	CNA
Apple	macOS	before 15	15	Patch available	CNA

Safari VendorApple Affected before 18 Fixed in 18 Patch available CNA
macOS VendorApple Affected before 15 Fixed in 15 Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:apple:safari::::::::	before 18.0	Vulnerable	Apple
cpe:2.3:o:apple:macos::::::::	before 15.0	Vulnerable	Apple

cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* Versions before 18.0 Vulnerable ·Apple
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 15.0 Vulnerable ·Apple

Remediation

Fix · CNA Safari (Apple) Fixed in 18
Fix · CNA macOS (Apple) Fixed in 15

Red Hat 4 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-2024:9636 Released 2024-11-14 · Red Hat rating Important
webkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 8) webkit2gtk3-2.46.3-1.el8_10, webkit2gtk3-devel-2.46.3-1.el8_10, webkit2gtk3-jsc-2.46.3-1.el8_10 +1
RHSA-2024:9553 Released 2024-11-13 · Red Hat rating Important
webkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3-2.46.3-1.el9_5, webkit2gtk3-devel-2.46.3-1.el9_5, webkit2gtk3-jsc-2.46.3-1.el9_5 +1

Show 1 more Red Hat advisories

RHSA-2024:8180 Released 2024-10-16 · Red Hat rating Important
webkit2gtk3 security update
- Red Hat Enterprise Linux AppStream (v. 9) webkit2gtk3-2.46.1-2.el9_4, webkit2gtk3-devel-2.46.1-2.el9_4, webkit2gtk3-jsc-2.46.1-2.el9_4 +1

Fixed in the same release

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

Release · 2024-09-16
Apple macOS 15
36 records Highest priority Priority MEDIUM 3 MEDIUM, 33 LOW
Other records, highest priority first
- TI-2024-29716 Apple macOS: An app may be able to break out of its sandboxPriority MEDIUM 44
- TI-2024-29714 Apple macOS: An app may be able to break out of its sandboxPriority MEDIUM 44
- TI-2024-29703 Link following in Apple macOSPriority MEDIUM 40
Show all 36 records →
Release · 2024-09-16
Apple Safari 18
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2024-29768 Improper authentication in Apple SafariPriority LOW 31
- TI-2024-29753 Origin validation error in Apple SafariPriority LOW 30
- TI-2024-27236 Cross-site scripting in Apple SafariPriority LOW 28
Show all 4 records →

Vendor assessments

Red Hat

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

Product	Status	Plan or fix
Red Hat Enterprise Linux 7	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)	Fixed	RHSA-2024:9636
Red Hat Enterprise Linux AppStream (v. 9)	Fixed	RHSA-2024:8180, RHSA-2024:9553
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

Timeline

2026-10-02 Threatist record created from CVE-2024-40866
2026-10-03 Alias added: GHSA-h9cp-5vvc-8wqc

References

Advisory 2

TI-2026-46583 Improper authentication in Apple macOS KEVCVSS 3.1CRITICAL 9.8
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

See all 3490 →

Sources

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