EUVD-2026-77236
GHSA-wwwx-57v8-r5j8
Severity by source
CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/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
Physical access and non-trivial extraction technique required; only credential confidentiality is impacted, no integrity or availability effect.
Primary rating from Vendor (jpcert).
CVSS VectorVendor: jpcert
Lifecycle Timeline
3DescriptionCVE.org
Plaintext storage of a password issue exists in CONPROSYS nano Series . If this vulnerability is exploited, an attacker with physical access to the product may obtain credentials.
AnalysisAI
Plaintext credential storage in CONTEC's CONPROSYS nano Series industrial remote I/O devices exposes passwords to attackers with physical device access. Affecting multiple coupler unit models (server-type, EtherNet/IP adapter, and software PLC variants), the flaw means credentials are recoverable without decryption from device storage. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Physical access to the specific CONPROSYS nano Series hardware unit is mandatory (AV:P). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 4.1 accurately reflects the constrained threat model: AV:P (physical access mandatory) and AC:H (non-trivial extraction technique required) together make this a low-probability attack in most deployments. … 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 | Consult the CONTEC vendor security advisory (https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf) for available firmware updates; no specific patched version number is confirmed in the available references. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Credential disclosure in Contec's Remote I/O Coupler Unit (Server Type) CPSN-MCB271 enables an attacker who obtains a de
Unauthenticated REST API access on Contec's CPSN-MCB271 series Remote I/O Coupler Unit (Server Type) allows any network-
Stack-based buffer overflow in Contec Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* allows an authenticated remote
Out-of-bounds write in CONPROSYS nano Series Remote I/O Coupler Units from Contec Co., Ltd. enables remote attackers wit
Cross-site scripting in CONTEC's CONPROSYS nano Series industrial remote I/O coupler units allows an unauthenticated att
Cross-site request forgery affects a broad range of Contec industrial data loggers, flow computers, and remote I/O coupl
Same weakness CWE-256 – Plaintext Storage of a Password
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today