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Seetong T8108 CVE-2026-100886

| EUVDEUVD-2026-88050 CRITICAL
Improper Authentication (CWE-287)
2026-09-27 cna@vuldb.com GHSA-7mpp-mc8j-2fxx
9.3
CVSS 4.0 · Vendor: vuldb
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Severity by source

Vendor (vuldb) PRIMARY
9.3 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/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
vuln.today AI
9.8 CRITICAL

Unauthenticated network auth bypass on a debug service, low complexity, likely yielding full device code execution, so C/I/A all High; scope Unchanged as the device is the single security authority.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (vuldb).

CVSS VectorVendor: vuldb

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
POC Analysis Generated
Sep 28, 2026 - 11:24 vuln.today
Analysis Generated
Sep 27, 2026 - 23:35 vuln.today
CVE Published
Sep 27, 2026 - 23:16 cve.org
CRITICAL 9.3

DescriptionCVE.org

A vulnerability was identified in Seetong T8108, T8108P, T8116 and T8232 4.6.1.4-build202604241011. The affected element is an unknown function of the component Debug Service. Such manipulation leads to improper authentication. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Improper authentication in the Debug Service of Seetong T8108, T8108P, T8116, and T8232 devices running firmware 4.6.1.4-build202604241011 lets unauthenticated, remote attackers bypass authentication and gain full control of the affected device, with the reported CVSS 4.0 base score of 9.3 (independent assessment: CVSS 3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, high confidentiality, integrity, and availability impact). Publicly available exploit code exists - a GitHub proof-of-concept repository targets the Seetong TS81xx series - so any reachable device must be treated as exploitable, although the supplied data contains no CISA KEV entry confirming active exploitation. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires network reachability to the affected device's 'Debug Service' on Seetong T8108, T8108P, T8116, or T8232 running firmware 4.6.1.4-build202604241011; no credentials or user interaction are needed (PR:N/UI:N), matching the improper-authentication weakness. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 9.3 (AV:N/AC:L/AT:N/PR:N/UI:N with VC/VI/VA:H and subsequent-system SC/SI/SA:H) describes an unauthenticated, network-reachable authentication flaw in a device 'Debug Service' with total impact on the device and, per the vendor's scope-change metrics, downstream systems. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch is identified at the time of analysis because the vendor did not respond to the disclosure, so mitigation must be compensating controls rather than an upgrade. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all Seetong T8108, T8108P, T8116, and T8232 devices running firmware 4.6.1.4-build202604241011, immediately disconnect them from the internet and any untrusted networks, and block inbound access to the Debug Service at the perimeter firewall; if remote access is required, enforce strict IP allowlisting and VPN-only access. …

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CVE-2026-100886 vulnerability details – vuln.today

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