EUVD-2026-71773
GHSA-p28w-h6rx-cx77
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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
Network-reachable with low privilege credentials (PR:L per CVSS 4.0 vendor vector); credential extraction yields C:H, and subsequent credential-enabled reconfiguration justifies I:H; no availability impact described.
Primary rating from Vendor (icscert).
CVSS VectorVendor: icscert
Lifecycle Timeline
5DescriptionCVE.org
Tycon Systems TPDIN-Monitor-WEB3 versions 2.2.9 and prior are vulnerable to a Missing Authorization vulnerability. This could allow an attacker to extract system credentials, configurations, or flash contents.
AnalysisAI
Missing authorization enforcement in Tycon Systems TPDIN-Monitor-WEB3 versions 2.2.9 and prior allows low-privilege authenticated users to access restricted endpoints and extract system credentials, device configurations, and raw flash memory contents. Disclosed by CISA ICS-CERT under advisory ICSA-26-246-08, this affects an OT-class DC power monitoring appliance where credential extraction could enable full device takeover. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Low-privilege authenticated access to the TPDIN-Monitor-WEB3 web management interface is required, consistent with the CVSS 4.0 PR:L metric - the attacker must hold at least some valid credentials for the device. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.6 reflects a genuinely high-impact, low-complexity attack requiring only low-privilege credentials (PR:L) over the network (AV:N). … 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 | Upgrade the TPDIN-Monitor-WEB3 firmware to version 2.4.2, which is available as a firmware package at https://firm.tyconsystems.com/tpdin-monitor-web3-v2/TPDIN-MONITOR-WEB3-V2_v2.4.2.tfw or in hex format at https://firm.tyconsystems.com/tpdin-monitor-web3-v2/TPDIN-MONITOR-WEB3-V2_v2.4.2T.hex; consult the full CISA advisory at https://www.cisa.gov/news-events/ics-advisories/icsa-26-246-08 for installation procedures and any additional vendor guidance. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit your environment for TPDIN-Monitor-WEB3 devices running version 2.2.9 or earlier; restrict network access immediately to authorized administrators only and disable any unnecessary low-privilege user accounts on these systems. …
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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