by Kastro
Paper/Archive/CVE-2026-35075

CVE-2026-35075

MBS Single-A — Hardcoded default Password for Service Account

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 40.4.404 × 208.1No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

An unauthenticated remote attacker can recover a default, hard coded password from a firmware image and thus gain full access to all affected devices.

Affected

ProductAffectedFixed inSource
Single-AV1_00_00 – < V6_00_07V6_00_07CNA
Double-A ProfibusV1_00_00 – < V6_00_07V6_00_07CNA
Double-A x-linkV1_00_00 – < V6_00_07V6_00_07CNA
Single-XV1_00_00 – < V6_00_07V6_00_07CNA
Double-X CANV1_00_00 – < V6_00_07V6_00_07CNA
Double-X DALIV1_00_00 – < V6_00_07V6_00_07CNA
Double-X KNXV1_00_00 – < V6_00_07V6_00_07CNA
Double-X LONV1_00_00 – < V6_00_07V6_00_07CNA
Double-X M-BusV1_00_00 – < V6_00_07V6_00_07CNA
Double-X PROFINETV1_00_00 – < V6_00_07V6_00_07CNA
Double-X x-linkV1_00_00 – < V6_00_07V6_00_07CNA
Triple-X KNX+DALIV1_00_00 – < V6_00_07V6_00_07CNA

Scores by source

CERTVDE (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CERTVDE (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refcertvde.com/en/advisories/VDE-2026-039