CVE-2024-40841: Apple macOS · Processing a maliciously crafted video file may lead to unexpected app termination
Affects Apple macOSSource CVE Database V5
Not known to be exploited · CVSS 7.8 High.
Data as of 26 Oct 2026, 07:57 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 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 2026-10-26.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apple macOS | Affected
| Fixed in– |
AI-suggested
To mitigate CVE-2024-40841 effectively, organizations should prioritize updating all macOS systems to versions Sequoia 15 or Sonoma 14.7 or later, where the vulnerability is patched. Beyond patching, organizations should implement strict controls on the handling of video files from untrusted sources, including disabling automatic preview or processing of video attachments in email clients and messaging platforms. Employ endpoint security solutions capable of detecting and blocking malicious media files. User education is critical to reduce the risk of opening suspicious video files, emphasizing verification of file sources and cautious behavior. Network-level defenses such as sandboxing or isolating media processing applications can limit the impact of exploitation. Additionally, monitoring for abnormal application crashes or unusual system behavior related to media processing can provide early detection of exploitation attempts. Organizations should also review and restrict local user privileges to minimize the potential damage from exploitation. Finally, maintain up-to-date backups and incident response plans to recover quickly from any successful attacks.
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15, macOS Sonoma 14.7. Processing a maliciously crafted video file may lead to unexpected app termination.