CVE-2026-22114— Missing brute-force protection for web interface

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.

HTTP 基本认证未实施重试次数限制或退避（backoff）机制。结合默认的服务密码，密钥空间（keyspace）可被完全穷举。

CVSS 5.3 · Medium 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

Missing brute-force protection for web interface

Source: CVE Program / CVE List V5

Vulnerability Description

HTTP basic auth enforces no retry limit or backoff. Combined with the default service password, the keyspace is exhaustible.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Source: CVE Program / CVE List V5

Vulnerability Type

过多认证尝试的限制不恰当

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Delta Electronics	Delta UFC500	2.4.18	-
Delta Electronics	Delta UFC500	0 ~ 4.4.2	-

II. Public POCs for CVE-2026-22114

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-22114

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Vendor Advisories for CVE-2026-22114 (2)

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

https://www.cve.org/CVERecord?id=CVE-2026-22114

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-2026-22105	8.7 HIGH	Use of default password based on serial number
CVE-2026-22109	8.4 HIGH	Default WebUI passwords stored in plaintext

IV. Related Vulnerabilities

Same product: Delta UFC500

Same vendor: Delta Electronics

Same weakness: CWE-307