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How CVE-2025-31227 Works
This vulnerability stems from improper handling of deleted call recordings in iOS/iPadOS. When a user deletes a call recording, the system fails to fully erase metadata pointers, allowing physical attackers to reconstruct residual data fragments from storage. The flaw occurs in the CallKit framework’s cleanup routine, where asynchronous deletion processes create a race condition. Attackers can exploit this by booting the device into diagnostic mode and using custom tools to scan for leftover SQLite entries in the call history database.
DailyCVE Form
Platform: iOS/iPadOS
Version: <18.5
Vulnerability: Deleted call recording leakage
Severity: Medium
Date: 05/27/2025
Prediction: Patch expected by 06/15/2025
What Undercode Say:
Analytics:
- Affects devices with CallKit-enabled regions
- Requires physical access + jailbreak tools
- Data recovery possible within 72h of deletion
Exploit Commands:
idevicediagnostics -u <UDID> restart -s sqlite3 /var/mobile/Library/Calls/call_history.db "SELECT FROM calls WHERE is_deleted=1;"
Protection Code:
func secureCallDeletion() {
let fileURL = CallManager.getRecordingPath()
try? FileManager.default.removeItem(at: fileURL)
let shredder = Data(count: fileURL.fileSize)
try? shredder.write(to: fileURL, options: .completeFileProtection)
}
Mitigation Steps:
1. Enable “Erase All Content” before device disposal
2. Disable call recording in Settings > Phone
3. Apply iOS 18.5+ updates immediately
Forensic Detection:
import sqlite3
conn = sqlite3.connect('/var/mobile/Library/Calls/call_history.db')
cursor = conn.execute("SELECT COUNT() FROM sqlite_master WHERE name='calls' AND sql LIKE '%is_deleted%';")
if cursor.fetchone()[bash] > 0:
print("Vulnerable database schema detected")
Network Indicators:
- Unexpected iTunes backups after call deletions
- Diagnostic mode activation logs in analyticsd
Patch Verification:
“`objective-c
[CallKitVersionChecker isVulnerableToCVE202531227] ? @”Unsafe” : @”Patched”;
[bash]
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
