Critical · CVSS 9.3CVE-2026-61884

Tycon Systems TPDIN-Monitor-WEB2 Missing Authentication for Critical FunctionCVE-2026-61884

Answer in brief

CVE-2026-61884 records a Critical severity (CVSS 9.3) vulnerability in Tycon Systems TPDIN-Monitor-WEB2 Missing Authentication for Critical Function. The current sources do not mark it as known exploited. The current feed maps Tycon Systems/TPDIN-Monitor-WEB2 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 24, 2026Updated Sep 4, 2026Source checked Oct 20, 2026First seen by HOL Sep 4, 2026Material review Sep 4, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Tycon Systems/TPDIN-Monitor-WEB2 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Tycon Systems/TPDIN-Monitor-WEB2generic	>=0 <2.4.5	2.4.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for Tycon Systems/TPDIN-Monitor-WEB2.
Review the reported fix. Source-reported solution: Tycon Systems has released firmware 2.4.5, which resolves this vulnerability by requiring an administrator username and password to be set before the web interface is served. Further inquiries can be directed to [email protected]. Tycon Systems recommends setting an administrative username and strong password on the Network Configuration page and confirming in a private browser window that a login is required, for units still running firmware 2.4.4 or earlier. Repeat this after any factory reset. Tycon Systems recommends not exposing the web interface to the Internet, as it is HTTP only. The unit should be kept on a private network, behind a firewall or VPN.

Evidence timeline and material changes

Published upstream
Jul 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 4, 2026

Sources and claim methodology

Upstream source description

The Tycon Systems TPDIN-Monitor-WEB2 ships without HTTP credentials configured, intended for an installer to set them on first use. On firmware 2.4.4 and earlier, a unit left in this unconfigured state serves the web management interface without requiring any login. An attacker with network access to such a unit can reach full device controls, including power relay management, device reboot, remote access service configuration, and network settings, which could allow disruption of connected infrastructure or physical damage to equipment.

Quoted source text, attributed separately from HOL analysis.