CVE-2026-22105— Use of default password based on serial number

Quick assessment

Affected

Delta Electronics Delta UFC500

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Delta UFC500 充电桩通过设备序列号的特定字符位置派生服务账户的默认凭据。拥有相邻网络访问权限的未认证攻击者可重构生成的密码，或遍历密钥空间，从而登录并读取或修改敏感配置（例如 OCPP 后端设置）。

CVSS 8.7 · High Updated Oct 31, 2026

Possible ATT&CK Techniques 2 AI

T1190 · Exploit Public-Facing Application T1110.001 · Password Guessing

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Vulnerability Information

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Vulnerability Title

Use of default password based on serial number

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

CWE-1392

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Delta Electronics	Delta UFC500	0 ~ 2.4.18	-
Delta Electronics	Delta UFC500	0 ~ 4.4.1	-

II. Public POCs for CVE-2026-22105

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-22105

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Vendor Advisories for CVE-2026-22105 (2)

🔗 DIVD-2026-00012 - MikroTik RouterOS MikroTrick vulnerabilities | DIVD CSIRT third-party-advisory
🔗 DIVD CSIRT | Making the internet safer through Coordinated Vulnerability Disclosure third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-22105

Same Patch Batch · Delta Electronics · 2026-10-30 · 4 CVEs total

CVE-2026-22110	8.7 HIGH	Missing authentication check on POST/PUT requests
CVE-2026-22109	8.4 HIGH	Default WebUI passwords stored in plaintext
CVE-2026-22114	5.3 MEDIUM	Missing brute-force protection for web interface

IV. Related Vulnerabilities

Same product: Delta UFC500

Same vendor: Delta Electronics

Same weakness: CWE-1392