Vulnerability · Published Oct 30, 2026 · Assigned by DIVD
CVE-2026-22109Default WebUI passwords stored in plaintext
High 8.4
In plain English
A high-severity security flaw in Delta UFC500 from Delta Electronics. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities).
Severity (CVSS 4.0)8.4High
Exploit odds (30 days)0.2%top 95.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The shipped WebUI template database retains the factory default passwords for all five account types in cleartext. Defaults are identical across devices and were unchanged on the tested unit.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Delta Electronics | Delta UFC500 | see references |
| Delta Electronics | Delta UFC500 | 0 – before 1.4.7 |
Weakness: CWE-1392 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:H/SI:H/SA:L
References
- https://csirt.divd.nl/DIVD-2026-00012 third-party-advisory
- https://csirt.divd.nl/CVE-2026-22109 third-party-advisory