CVE-2026-3869

CVE Enrichment

CVSS: 9.2 CRITICAL
EPSS: 0.54%
EPSS Percentile: 44.77%
CISA KEV: Not listed

Description

CWE-303 : Incorrect Implementation of Authentication Algorithm vulnerability exists that could cause loss of confidentiality, integrity and availability of the PLC provided an application project with a lower application level is running on the PLC.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: [email protected]
Published: 11-Sep-2026 23:17
Last Modified: 19-Sep-2026 02:30
EPSS Date: 2026-10-21
CWE: CWE-303

CVSS Vector


            CVSS:4.0                            AV:N /
                            AC:L /
                            AT:P /
                            PR:N /
                            UI:N /
                            VC:H /
                            VI:H /
                            VA:H /
                            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

References

[email protected]

Last enrichment sync: 02-Nov-2026 01:40
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

Tracked as CVE-2026-3869, the flaw has a CVSS score of 9.2. Schneider Electric, Siemens and Aveva Address ICS Vulnerabilities in September Patch Advisories

CVE (1)

Vendors (4)

Products (28)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.