CVE-2026-122118 | BDVDB-2026-400412 Detail

YealinkAVHub

Description#

In certain Yealink products before 2026-04-15, when the Wi-Fi AP function is enabled, a default 8-digit numeric PSK with insufficient strength is used. Attackers can exploit this weakness via brute-force attacks to gain unauthorized network access and intercept Wi-Fi traffic.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: adjacent.

Weaknesses#

CWE-334 Small Space of Random Values

References#

https://www.yealink.com/en/trust-center/security-bulletins/wifi-ap-weak-password-vulnerability

Exploit#

No public exploit known

History#

Version 12026-11-04Record published in the CVE List.

Published

Published: 2026-11-04
Last modified: 2026-11-04

Vendor information

Vendor: Yealink
Product: AVHub

All Yealink vulnerabilities

Score

7.4 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 10.7.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 153.135.0.76
Fixed
153.135.0.76

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.4 High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Metric breakdown
Attack Vector	Adjacent
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Changed
Confidentiality	High
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).