CVE-2024-40857: This issue was addressed through improved state management
Source GCVE Database
Not known to be exploited · CVSS 6.1 Medium.
Data as of 4 Nov 2026, 17:17 UTC
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
The vulnerability is fixed in Safari 18, visionOS 2, watchOS 11, macOS Sequoia 15, iOS 18, iPadOS 18, and tvOS 18. Users and administrators should ensure their devices and software are updated to these versions or later to mitigate this issue.
Description
CVE-2024-40857 is a vulnerability fixed by improved state management in Apple products including Safari 18, visionOS 2, watchOS 11, macOS Sequoia 15, iOS 18, iPadOS 18, and tvOS 18. The flaw allows processing of maliciously crafted web content that may lead to universal cross-site scripting (UXSS). The vulnerability has a medium severity rating with a CVSS score of 6.1.
References
- nvd.nist.gov/vuln/detail/CVE-2024-40857 (opens in a new tab)
- support.apple.com/en-us/121238 (opens in a new tab)
- support.apple.com/en-us/121240 (opens in a new tab)
- support.apple.com/en-us/121241 (opens in a new tab)
- support.apple.com/en-us/121248 (opens in a new tab)
- support.apple.com/en-us/121249 (opens in a new tab)
- support.apple.com/en-us/121250 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/32 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/33 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/36 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Sep/37 (opens in a new tab)