CVE-2025-24191: Apple macOS · An app may be able to modify protected parts of the file system
Affects Apple macOSSource CVE Database V5
Not known to be exploited · CVSS 5.5 Medium · fixed in 15.4 : update Apple macOS when convenient.
Data as of 26 Oct 2026, 07:57 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 15.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 31 Mar 2025
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
1. Apply the macOS Sequoia 15.4 update or later immediately to ensure the vulnerability is patched. 2. Restrict installation of applications to trusted sources such as the Mac App Store or verified developers to reduce the risk of malicious apps exploiting this flaw. 3. Employ application whitelisting and endpoint protection solutions capable of detecting unauthorized modifications to protected file system areas. 4. Educate users about the risks of installing untrusted software and the importance of avoiding suspicious links or files that require user interaction. 5. Monitor system logs and file integrity monitoring tools for unusual changes in system directories or binaries. 6. Implement least privilege principles to limit the ability of applications to influence environment variables or execute code with elevated permissions. 7. Consider using macOS security features such as System Integrity Protection (SIP) and notarization to further restrict unauthorized modifications. 8. Maintain regular backups of critical systems to enable recovery in case of compromise.
Description
The issue was addressed with improved validation of environment variables. This issue is fixed in macOS Sequoia 15.4. An app may be able to modify protected parts of the file system.