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GPM LIGHT CVE-2026-97181

| EUVDEUVD-2026-85814 MEDIUM
Exposure of Sensitive System Information to an Unauthorized Control Sphere (CWE-497)
2026-09-24 twcert GHSA-4266-g8jg-m68m
6.9
CVSS 4.0 · Vendor: twcert
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Identify exposed GPM LIGHT instance
  2. Exploit
    Send direct request to log endpoint
  3. Execution
    Retrieve system logs unauthenticated
  4. Impact
    Harvest sensitive data for recon

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection System info exposure prevention
Exploitation Conditions

No special conditions - remote unauthenticated exploitation against network-reachable deployments of GPM LIGHT (ezGlobal). Per the description and CVSS PR:N/UI:N/AC:L, an attacker needs only network access to the instance's log-serving endpoint; no credentials, no user interaction, and no special configuration are required. The primary limiting factor is exposure: the instance must be reachable by the attacker (internet-facing or on the attacker's network segment), and the practical impact depends on whether the exposed system logs actually contain sensitive data such as credentials, tokens, or PII versus benign operational messages. Affected versions are unspecified (wildcard CPE), so all deployments should be treated as potentially vulnerable until vendor version guidance is available.

Impact

This is a moderate-severity information-disclosure issue whose real-world priority is limited. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) confirms trivially reachable, unauthenticated, network-based exploitation with no user interaction - the ideal conditions for opportunistic scanning. However, the impact is bounded: only VC:L (low confidentiality), with no integrity (VI:N) or availability (VA:N) effect and no scope change (SC/SI/SA:N), which is why the vendor score lands at 6.9 rather than higher. No EPSS score, no CISA KEV listing, and no public POC were provided, so there is no positive signal of active or automated exploitation. The exposed data is 'system logs,' which are useful for reconnaissance (host details, paths, tokens, internal errors) but do not directly grant access. Net assessment: a genuine but not urgent finding - patch in normal cycles, prioritize higher if the logs are known to contain credentials or session data. Missing SSVC data (automatable/technical-impact) and EPSS mean exploitation-likelihood signals are absent rather than reassuringly low.

Exploit ScenarioDerived

An unauthenticated attacker discovers a GPM LIGHT instance exposed to the network and sends a direct request to the log-serving endpoint, retrieving system logs without any credentials. The disclosed log contents (internal paths, error traces, and potentially tokens or user data) are then mined for reconnaissance to support follow-on attacks. No public exploit code has been identified at time of analysis, though the low attack complexity makes reproduction straightforward.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 24, 2026

Unauthenticated remote access to system logs in ezGlobal's GPM LIGHT lets anyone who can reach the product's log-serving endpoint read sensitive operational data without credentials, user interaction, or special configuration (CVSS:4.0 AV:N/AC:L/AT:N/PR:N/UI:N, 6.9; independently assessed as CVSS:3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N). Impact is confined to confidentiality (C:L) - the attacker reads logs rather than altering or disrupting the service - so real-world severity hinges on whether those logs contain credentials, session tokens, internal hostnames, or PII instead of benign operational messages. Affected versions are unspecified (wildcard CPE), meaning every deployment should be treated as potentially vulnerable, and no public exploit code has been identified at time of analysis; the issue is not listed in CISA KEV.

RemediationAI

No vendor-released patch identified at time of analysis, and the wildcard CPE provides no fixed version to upgrade to, so remediation must begin with compensating controls while monitoring the TWCERT advisories at https://www.twcert.org.tw/tw/cp-132-11216-9ce77-1.html and https://www.twcert.org.tw/en/cp-139-11217-86b58-2.html for a vendor fix. The highest-value action is to remove the log-serving endpoint from internet exposure: block the relevant port/path at the perimeter firewall or upstream load balancer and place administrative and log interfaces behind a VPN or a zero-trust access proxy, accepting the trade-off that remote operators lose direct access and must tunnel in. Where the endpoint must stay reachable, front it with a reverse proxy or web server that enforces authentication and source-IP allow-listing, noting this adds a component to maintain and may break integrations that rely on unauthenticated log fetches. Narrow further by disabling verbose or debug logging so secrets, tokens, and request bodies are not written to the logs at all, and rotate any credentials, API keys, or session tokens that may already have been captured in previously exposed logs - this addresses the downstream risk but does not close the exposure itself. Finally, hunt for evidence of access to the log endpoint in web server and proxy logs, since exploitation leaves no footprint on the application other than the read itself.

Affected VersionsENISA

GPM LIGHT all

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Technical ContextAI · show details

The flaw is classified as CWE-497 (Exposure of Sensitive System Information to an Unauthorized Actor), which covers applications that make system-level diagnostic or log information available to parties who should not see it. GPM LIGHT, a product of ezGlobal, appears to serve log content through a network-reachable interface that performs no authentication or authorization check before returning the data; the CVSS 4.0 vector (AT:N, PR:N, UI:N, AV:N) confirms that exploitation requires only network reachability and no pre-conditions or privileges. The wildcard CPE cpe:2.3:a:ezglobal:gpm_light:*:*:*:*:*:*:*:* indicates the vendor has not published a fixed version range in the CPE dictionary, so the exposure cannot be scoped by version from available data. Because logs frequently capture request parameters, authentication headers, stack traces, and configuration diagnostics, this class of bug is a common precursor to credential harvesting and lateral movement even though its direct impact is read-only.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (twcert) PRIMARY 6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
vuln.today AI 5.3 MEDIUM

Unauthenticated network access with no interaction (AV:N/AC:L/PR:N/UI:N); read-only log disclosure gives C:L with no integrity or availability impact and no scope change.

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

Primary rating from Vendor (twcert).

CVSS VectorVendor: twcert

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
None
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionCVE.org

GPM LIGHT developed by ezGlobal has a Sensitive Data Exposure vulnerability. Unauthenticated remote attackers can directly access system logs.

Threat Intelligence Overview

EPSS Score
0.3%
Top 84% exploitable
Prevalence
Low
niche ezGlobal product, primarily Taiwan market via TWCERT, limited footprint
Social Media
1
Sightings
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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