CVE-2026-122116

MEDIUMCVSS 4.3/10

Last modified

CVE-2026-122116 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.

Description

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.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
YealinkT3XW Series Phones>= 124.85.0.1, < 124.87.0.22
YealinkT4X Series Phones>= 108.85.0.1, < 108.87.0.23
YealinkT5X Series Phones>= 96.85.0.1, < 96.87.0.24
YealinkT7X Series Phones>= 185.87.0.5, < 185.87.0.39
YealinkSIP-T85W、SIP-T87W>= 185.87.0.5, < 185.87.0.39
YealinkAX83H、AX86R>= 180.86.0.1, < 180.87.0.15
YealinkCP925>= 148.85.0.1, < 148.87.0.41
YealinkCP935W>= 149.85.0.1, < 149.87.0.41
YealinkMP E2 Teams Series>= 176.15.0.1, < 176.15.0.191
YealinkVP59 Teams>= 91.15.0.1, < 91.15.1.37
YealinkSIP-T58W>= 150.86.0.5, < 150.87.0.22
YealinkVP59>= 91.86.0.5, < 91.87.0.27
YealinkCP965>= 143.86.0.5, < 143.87.0.27

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-122116?
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.
How severe is CVE-2026-122116?
CVE-2026-122116 has a CVSS score of 4.3/10 (MEDIUM severity).
How do I fix CVE-2026-122116?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST