CVE-2026-82684
Tycon Systems TPDIN-Monitor-WEB3 Missing Authorization
02 Description
Tycon Systems TPDIN-Monitor-WEB3 Missing Authorization
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.46% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 39.9% of scored records. A rank, not a probability.
- NVD base score
- 8.6 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- 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
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-09-08.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-09-04 21:01Z1 MO AGO
- Last updated
- 2026-09-08 15:53Z1 MO AGO
- Reserved
- 2026-09-01
- Assigning CNA
- icscert
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.6)
- CNA CVSS vector
- 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
- Weaknesses
- CWE-862Missing AuthorizationClass
- Data version
- 5.2
- Document digest
- e462f6742965fcb3d79f3af958b8aae0b06673f4583d63833a00425ce8d5993c
05 Affected products
06 References
- firm.tyconsystems.comhttps://firm.tyconsystems.com/tpdin-monitor-web3-v2/TPDIN-MONITOR-WEB3-V2_v2.4.2.tfw
- firm.tyconsystems.comhttps://firm.tyconsystems.com/tpdin-monitor-web3-v2/TPDIN-MONITOR-WEB3-V2_v2.4.2T.hex
- www.cisa.govhttps://www.cisa.gov/news-events/ics-advisories/icsa-26-246-08
- github.comhttps://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-246-08.json
07 Remediation
Tycon Systems has released TPDIN-Monitor-WEB3 Firmware v2.4.2. Units already running v2.4.2, for subsequent updates (signed container): https://firm.tyconsystems.com/tpdin-monitor-web3-v2/TPDIN-MONITOR-WEB3-V2_v2.4.2.tfw All units currently in the field, including the v2.2.9 covered by this report (legacy Intel HEX): https://firm.tyconsystems.com/tpdin-monitor-web3-v2/TPDIN-MONITOR-WEB3-V2_v2.4.2T.hex A unit running v2.2.9 installs the .hex build directly and arrives at v2.4.2 in a single step; no intermediate version is required. The signed .tfw container cannot be read by a v2.2.9 updater, which accepts only Intel HEX, so the .hex artifact is the one every deployed unit needs. For more information, contact Tycon Systems: https://www.tyconsystems.com/contact