CVE-2026-122116Medium· 4.3▾ SunlitCertain Yealink terminal devices before 2026-04-21 contain an improper access control vulnerability in the Wi-Fi 802.1X PEAP network configuration function. This flaw exposes deployed 802.1X network access authentication credentials to u…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 23.7 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Certain Yealink terminal devices before 2026-04-21 contain an improper access control vulnerability in the Wi-Fi 802.1X PEAP network configuration function. This flaw exposes deployed 802.1X network access authentication credentials to unauthorized users. The latest Yealink firmware has addressed this vulnerability by restricting 802.1X configuration modification privileges to administrator accounts only by default.
t3xw_series_phones >= 124.85.0.1 < 124.87.0.22t4x_series_phones >= 108.85.0.1 < 108.87.0.23t5x_series_phones >= 96.85.0.1 < 96.87.0.24t7x_series_phones >= 185.87.0.5 < 185.87.0.39SIP-T85W、SIP-T87W >= 185.87.0.5 < 185.87.0.39AX83H、AX86R >= 180.86.0.1 < 180.87.0.15CP925 >= 148.85.0.1 < 148.87.0.41CP935W >= 149.85.0.1 < 149.87.0.41mp_e2_teams_series >= 176.15.0.1 < 176.15.0.191vp59_teams >= 91.15.0.1 < 91.15.1.37SIP-T58W >= 150.86.0.5 < 150.87.0.22VP59 >= 91.86.0.5 < 91.87.0.27CP965 >= 143.86.0.5 < 143.87.0.27We recommend that when enabling Wi-Fi 802.1X, you can restrict the access types of web users by updating security.web_limited_access_level via Auto Provision; for example: security.web_limited_access_level=user. Alternatively, refer to the Admin Guide to configure Wi-Fi permissions for the user account: network-wifi = 2, wifi = 2.
Regarding this vulnerability, newer firmware versions of the device have, by default, restricted 802.1X-related function permissions to administrator-only.
Connected by shared product, vendor, weakness, or advisory.
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