Security readout for executives and security teams
Plain-English summary
Affected Tycon power-monitoring units may expose their entire web control panel when installers leave HTTP credentials unset. Anyone with network access could change relay, reboot, remote-access, or network settings, potentially disrupting connected infrastructure or damaging equipment.
Executive priority
Treat as an immediate operational-technology priority where these devices control important equipment. Identify reachable units, enforce authentication, and isolate management access. Escalate any unconfigured unit connected to safety-sensitive or disruption-sensitive infrastructure because misuse could have physical consequences.
Technical view
CVE-2026-61884 is a CWE-306 missing-authentication flaw in TPDIN-Monitor-WEB2. In the unconfigured credential state, firmware 2.4.4 and earlier accepts unauthenticated access to critical management functions. CVSS 3.1 rates it 9.8 because exploitation requires no privileges or user interaction and can compromise confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to units left without HTTP credentials, but consequences are severe wherever an attacker can reach the management interface. Prioritize devices accessible from untrusted, shared, or broadly routed networks. The bundle’s structured version data is ambiguous, so confirm exact firmware scope with Tycon or CISA.
Exploitation context
The provided sources do not establish active exploitation, and the CVE is not listed as KEV in the bundle. Exploitation nevertheless appears low-complexity because an attacker only needs network access to an unconfigured management interface; no authentication or user interaction is required.
Researcher notes
The central precondition is the factory or installer-unconfigured credential state, not merely product presence. The narrative identifies firmware 2.4.4 and earlier, while the structured affected entry contains “0” and “2.4.5” without clear range semantics. Do not assume 2.4.5 is affected or fixed without authoritative clarification.
Mitigation direction
- Configure strong HTTP credentials on every unit immediately.
- Restrict management-interface access to trusted administrative networks.
- Remove unnecessary remote network exposure to affected units.
- Check Tycon and CISA guidance for confirmed firmware remediation and exact affected versions.
Validation and detection
- Inventory all TPDIN-Monitor-WEB2 units and record their firmware versions.
- Verify every management interface requires authentication before displaying device controls.
- Confirm only approved administrative networks can reach each management interface.
- Inspect relay, reboot, remote-access, and network settings for unauthorized changes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-61884 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9icscertCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——icscertVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: 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
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-202-01CVE reference, icscert
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-202-01.jsonCVE reference, icscert
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.