CVE-2024-40780: Apple Safari · Processing maliciously crafted web content may lead to an unexpected process crash
Affects Apple SafariSource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium : upgrade to 17.6 when convenient.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 52% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 17.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 29 Jul 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 2026-10-25.
What to do
Upgrade apple/safari to 17.6.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Appleapple/safaripkg:deb/apple/safariOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
1. Immediately update all affected Apple devices and Safari browsers to the patched versions: Safari 17.6, iOS 16.7.9 and 17.6, iPadOS 16.7.9 and 17.6, macOS Sonoma 14.6, tvOS 17.6, visionOS 1.3, and watchOS 10.6. 2. Implement web content filtering and URL reputation services to block access to potentially malicious websites. 3. Educate users about the risks of visiting untrusted or suspicious web pages, emphasizing cautious browsing behavior. 4. Employ network-level protections such as DNS filtering and secure web gateways to reduce exposure to malicious content. 5. Monitor Safari crash logs and endpoint telemetry for unusual patterns that may indicate exploitation attempts. 6. For enterprise environments, consider restricting Safari usage or sandboxing browser processes to limit impact of crashes. 7. Maintain up-to-date backups and session recovery mechanisms to mitigate data loss from unexpected browser crashes. 8. Coordinate with Apple support channels for any additional guidance or emergency patches if needed.
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in Safari 17.6, iOS 16.7.9 and iPadOS 16.7.9, iOS 17.6 and iPadOS 17.6, macOS Sonoma 14.6, tvOS 17.6, visionOS 1.3, watchOS 10.6. Processing maliciously crafted web content may lead to an unexpected process crash.
References
- support.apple.com/en-us/120908 (opens in a new tab)
- support.apple.com/en-us/120909 (opens in a new tab)
- support.apple.com/en-us/120911 (opens in a new tab)
- support.apple.com/en-us/120913 (opens in a new tab)
- support.apple.com/en-us/120914 (opens in a new tab)
- support.apple.com/en-us/120915 (opens in a new tab)
- support.apple.com/en-us/120916 (opens in a new tab)
- support.apple.com/en-us/HT214121 (opens in a new tab)
- support.apple.com/en-us/HT214117 (opens in a new tab)
- support.apple.com/en-us/HT214116 (opens in a new tab)
- support.apple.com/en-us/HT214124 (opens in a new tab)
- support.apple.com/en-us/HT214119 (opens in a new tab)
- support.apple.com/en-us/HT214123 (opens in a new tab)
- support.apple.com/en-us/HT214122 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Jul/16 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Jul/15 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Jul/23 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Jul/21 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Jul/17 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Jul/22 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Jul/18 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2024/09/msg00006.html (opens in a new tab)
- support.apple.com/kb/HT214124 (opens in a new tab)
- support.apple.com/kb/HT214123 (opens in a new tab)
- support.apple.com/kb/HT214122 (opens in a new tab)
- support.apple.com/kb/HT214119 (opens in a new tab)
- support.apple.com/kb/HT214117 (opens in a new tab)
- support.apple.com/kb/HT214116 (opens in a new tab)