CVE-2026-8586

Description

Inappropriate implementation in Chromoting in Google Chrome prior to 148.0.7778.168 allowed a local attacker to bypass discretionary access control via a malicious file. (Chromium security severity: Medium)

CVSS Details

CVSS Score

5.5

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Google Chrome < 148.0.7778.168

PoC / Exploit Code

⚠ For Security Research Only

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

python

# PoC Concept for CVE-2026-8586
# This demonstrates the creation of a file intended to trigger the DAC bypass.
# Note: Actual exploit requires specific binary format manipulation.

import os

def create_malicious_file(file_path):
    """
    Creates a dummy file that simulates the malicious payload structure
    required to trigger the Chromoting vulnerability.
    """
    # In a real scenario, this payload would be crafted to exploit
    # the inappropriate implementation in Chromoting.
    payload = b"\x00\x01\x02\x03CHROMOTING_EXPLOIT"
    
    try:
        with open(file_path, 'wb') as f:
            f.write(payload)
        print(f"[+] File created at: {file_path}")
        print(f"[+] Deliver this file to the target and trigger via Chrome Chromoting.")
    except IOError as e:
        print(f"[-] Error: {e}")

if __name__ == "__main__":
    target = "exploit_cve_2026_8586.bin"
    create_malicious_file(target)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8586
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8586
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8586/
[4] VulDB https://vuldb.com/cve/CVE-2026-8586
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/499154022

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8586", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:20.990", "lastModified": "2026-05-15T15:16:56.460", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Inappropriate implementation in Chromoting in Google Chrome prior to 148.0.7778.168 allowed a local attacker to bypass discretionary access control via a malicious file. (Chromium security severity: Medium)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.1, "impactScore": 3.4}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-284"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/499154022", "source": "[email protected]"}]}}