CVE-2026-22105

Use of default password based on serial number

Published Oct 30, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
Delta UFC500 charging stations derive the default credentials of the Service account from character positions of the device serial number. An unauthenticated attacker with adjacent network access can reconstruct the resulting password, or exhaust the keyspace, and log in to read and change sensitive settings such as the OCPP backend.

Remediation

Vendor Solution

Set a non-default password for the Service account.


Vendor Workaround

Set a non-default password for the Service account.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Delta Electronics
Delta Electronics delta Ufc500
Vendors & Products Delta Electronics
Delta Electronics delta Ufc500
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Delta UFC500 charging stations derive the default credentials of the Service account from character positions of the device serial number. An unauthenticated attacker with adjacent network access can reconstruct the resulting password, or exhaust the keyspace, and log in to read and change sensitive settings such as the OCPP backend.
Title Use of default password based on serial number
Weaknesses CWE-1392
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
DIVD
Published
Updated
Oct 30, 2026, 4:35 PM
Reserved
Jan 6, 2026, 11:08 AM
Status
Deferred
Published
Oct 30, 2026, 11:17 AM
Modified
Oct 30, 2026, 7:39 PM