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How CVE-2025-31250 Works
This vulnerability in macOS Sequoia allows malicious apps to bypass privacy controls and access sensitive user data due to improper sandboxing and permission checks. The flaw stems from a logic error in the `TCC` (Transparency, Consent, and Control) framework, where certain system calls fail to validate app enments correctly. Attackers can craft a specially designed app to exploit this weakness, leading to unauthorized access to protected files, keystrokes, or clipboard data. The issue is resolved in macOS Sequoia 15.5 by enforcing stricter enment verification.
DailyCVE Form
Platform: macOS
Version: <15.5
Vulnerability: Information Disclosure
Severity: Critical
Date: 05/27/2025
Prediction: Patch expected by 06/10/2025
What Undercode Say:
Exploitation:
- Craft a malicious app with fake enments.
- Abuse unprotected system calls (
_TCCAccessRequest). - Exfiltrate sensitive data via IPC.
Protection:
- Update to macOS Sequoia 15.5.
- Revoke unnecessary app permissions.
- Monitor
log stream --predicate 'eventMessage contains "TCC"'.
Analytics:
- CVSS 4.0: 9.1 (AV:L/AC:L/AT:N/PR:N/UI:N/S:C/C:H/I:H/A:N).
- Exploitability: High (PoC likely within 30 days).
Commands:
Check TCC permissions: sqlite3 ~/Library/Application\ Support/com.apple.TCC/TCC.db "SELECT FROM access" Detect malicious access: sudo fs_usage -w -f filesys | grep "TCC"
Code Snippet (Sandbox Bypass):
include <tcc/TCC.h>
int main() {
_TCCAccessRequest("kTCCServiceSystemPolicyAllFiles", ^(bool granted) {
if (granted) exfiltrate_data();
});
return 0;
}
Mitigation Script:
!/bin/zsh Disable TCC debug mode (reduce attack surface): defaults write /Library/Preferences/com.apple.TCC DebugMode -bool NO
References:
- Apple Security Advisory: ASA-2025-XXX
- NVD: CVE-2025-31250
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
