CVE-2024-40866: The issue was addressed with improved UI
Source GCVE Database
Not known to be exploited · CVSS 6.5 Medium.
Data as of 4 Nov 2026, 17:17 UTC
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.
What to do
AI-suggested
Users should update to Safari 18 and macOS Sequoia 15 or later, where the issue has been fixed through UI improvements. No additional mitigation is required beyond applying these official fixes.
Description
CVE-2024-40866 is a vulnerability fixed in Safari 18 and macOS Sequoia 15 that involves address bar spoofing via a malicious website. The issue was addressed by improving the user interface to prevent this spoofing.
References
- nvd.nist.gov/vuln/detail/CVE-2024-40866 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2024/11/msg00019.html (opens in a new tab)
- support.apple.com/en-us/121238 (opens in a new tab)
- support.apple.com/en-us/121241 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/33 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/37 (opens in a new tab)