{"id":"CVE-2026-122116","state":"PUBLISHED","title":"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 deplo","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.","publishedAt":"2026-11-04T17:47:04.288Z","updatedAt":"2026-11-04T17:47:04.288Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","source":"mitre"},"assigner":"mitre","products":["Yealink T3XW Series Phones","Yealink T4X Series Phones","Yealink T5X Series Phones","Yealink T7X Series Phones","Yealink SIP-T85W、SIP-T87W","Yealink AX83H、AX86R","Yealink CP925","Yealink CP935W","Yealink MP E2 Teams Series","Yealink VP59 Teams","Yealink SIP-T58W","Yealink VP59","Yealink CP965"],"affected":[{"vendor":"Yealink","product":"T3XW Series Phones","defaultStatus":"unaffected","versions":[{"version":"124.85.0.1","status":"affected","lessThan":"124.87.0.22","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"T4X Series Phones","defaultStatus":"unaffected","versions":[{"version":"108.85.0.1","status":"affected","lessThan":"108.87.0.23","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"T5X Series Phones","defaultStatus":"unaffected","versions":[{"version":"96.85.0.1","status":"affected","lessThan":"96.87.0.24","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"T7X Series Phones","defaultStatus":"unaffected","versions":[{"version":"185.87.0.5","status":"affected","lessThan":"185.87.0.39","versionType":"custom"}]},{"vendor":"Yealink","product":"SIP-T85W、SIP-T87W","defaultStatus":"unaffected","versions":[{"version":"185.87.0.5","status":"affected","lessThan":"185.87.0.39","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"AX83H、AX86R","defaultStatus":"unaffected","versions":[{"version":"180.86.0.1","status":"affected","lessThan":"180.87.0.15","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"CP925","defaultStatus":"unaffected","versions":[{"version":"148.85.0.1","status":"affected","lessThan":"148.87.0.41","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"CP935W","defaultStatus":"unaffected","versions":[{"version":"149.85.0.1","status":"affected","lessThan":"149.87.0.41","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"MP E2 Teams Series","defaultStatus":"unaffected","versions":[{"version":"176.15.0.1","status":"affected","lessThan":"176.15.0.191","versionType":"custom"}],"platforms":["Android"]},{"vendor":"Yealink","product":"VP59 Teams","defaultStatus":"unaffected","versions":[{"version":"91.15.0.1","status":"affected","lessThan":"91.15.1.37","versionType":"custom"}],"platforms":["Android"]},{"vendor":"Yealink","product":"SIP-T58W","defaultStatus":"unaffected","versions":[{"version":"150.86.0.5","status":"affected","lessThan":"150.87.0.22","versionType":"custom"}],"platforms":["Android"]},{"vendor":"Yealink","product":"VP59","defaultStatus":"unaffected","versions":[{"version":"91.86.0.5","status":"affected","lessThan":"91.87.0.27","versionType":"custom"}],"platforms":["Android"]},{"vendor":"Yealink","product":"CP965","defaultStatus":"unaffected","versions":[{"version":"143.86.0.5","status":"affected","lessThan":"143.87.0.27","versionType":"custom"}],"platforms":["Android"]}],"references":["https://www.yealink.com/en/trust-center/security-bulletins/wifi-8021x-peap-authentication-credential-leakage-vulnerability"],"weaknesses":["CWE-863"],"ingestedAt":"2026-11-04T17:56:06.536Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/122xxx/CVE-2026-122116.json","commit":"de8f4b7d6fb781d9ffb1de20483781210a425097","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-122116","state":"PUBLISHED","datePublished":"2026-11-04T17:47:04.288Z","dateUpdated":"2026-11-04T17:47:04.288Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-11-04T17:47:03.995Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Yealink","product":"T3XW Series Phones","defaultStatus":"unaffected","versions":[{"version":"124.85.0.1","status":"affected","lessThan":"124.87.0.22","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"T4X Series Phones","defaultStatus":"unaffected","versions":[{"version":"108.85.0.1","status":"affected","lessThan":"108.87.0.23","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"T5X Series Phones","defaultStatus":"unaffected","versions":[{"version":"96.85.0.1","status":"affected","lessThan":"96.87.0.24","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"T7X Series Phones","defaultStatus":"unaffected","versions":[{"version":"185.87.0.5","status":"affected","lessThan":"185.87.0.39","versionType":"custom"}]},{"vendor":"Yealink","product":"SIP-T85W、SIP-T87W","defaultStatus":"unaffected","versions":[{"version":"185.87.0.5","status":"affected","lessThan":"185.87.0.39","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"AX83H、AX86R","defaultStatus":"unaffected","versions":[{"version":"180.86.0.1","status":"affected","lessThan":"180.87.0.15","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"CP925","defaultStatus":"unaffected","versions":[{"version":"148.85.0.1","status":"affected","lessThan":"148.87.0.41","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"CP935W","defaultStatus":"unaffected","versions":[{"version":"149.85.0.1","status":"affected","lessThan":"149.87.0.41","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"Yealink","product":"MP E2 Teams Series","defaultStatus":"unaffected","versions":[{"version":"176.15.0.1","status":"affected","lessThan":"176.15.0.191","versionType":"custom"}],"platforms":["Android"]},{"vendor":"Yealink","product":"VP59 Teams","defaultStatus":"unaffected","versions":[{"version":"91.15.0.1","status":"affected","lessThan":"91.15.1.37","versionType":"custom"}],"platforms":["Android"]},{"vendor":"Yealink","product":"SIP-T58W","defaultStatus":"unaffected","versions":[{"version":"150.86.0.5","status":"affected","lessThan":"150.87.0.22","versionType":"custom"}],"platforms":["Android"]},{"vendor":"Yealink","product":"VP59","defaultStatus":"unaffected","versions":[{"version":"91.86.0.5","status":"affected","lessThan":"91.87.0.27","versionType":"custom"}],"platforms":["Android"]},{"vendor":"Yealink","product":"CP965","defaultStatus":"unaffected","versions":[{"version":"143.86.0.5","status":"affected","lessThan":"143.87.0.27","versionType":"custom"}],"platforms":["Android"]}],"references":[{"url":"https://www.yealink.com/en/trust-center/security-bulletins/wifi-8021x-peap-authentication-credential-leakage-vulnerability"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-11-04T17:47:04.288Z"},"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<div>We 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.</div><div>Regarding this vulnerability, newer firmware versions of the device have, by default, restricted 802.1X-related function permissions to administrator-only.</div>"}],"value":"We 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.\n\nRegarding this vulnerability, newer firmware versions of the device have, by default, restricted 802.1X-related function permissions to administrator-only."}],"x_generator":{"engine":"CVE-Request-form 0.0.1"}}}}}