Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-12219— Yealink SIP-T46U Web FastCGI Service start mod_diagnose.CommandShellByType command injection

Quick assessment

Affected
Yealink SIP-T46U
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.

sip-t46u是中国Yealink公司的一款IP电话终端设备。 Yealink SIP-T46U 108.86.0.118版本存在安全漏洞，该漏洞源于Web FastCGI Service组件中文件/api/diagnosis/start的函数mod_diagnose.CommandShellByType对参数Time的操作导致命令注入，可能导致远程攻击。

CVSS 6.3 · Medium EPSS 1.05% · P64

Affected Version Matrix 2

VendorProduct Version RangeStatus
Yealink SIP-T46U 108.86.0.118 affected
108.87.0.23 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-12219

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Yealink SIP-T46U Web FastCGI Service start mod_diagnose.CommandShellByType command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in Yealink SIP-T46U 108.86.0.118. The impacted element is the function mod_diagnose.CommandShellByType of the file /api/diagnosis/start of the component Web FastCGI Service. This manipulation of the argument Time causes command injection. The attack can be initiated remotely. The exploit has been published and may be used. Upgrading to version 108.87.0.23 is sufficient to resolve this issue. It is advisable to upgrade the affected component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Yealink sip-t46u 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sip-t46u是中国Yealink公司的一款IP电话终端设备。 Yealink SIP-T46U 108.86.0.118版本存在安全漏洞，该漏洞源于Web FastCGI Service组件中文件/api/diagnosis/start的函数mod_diagnose.CommandShellByType对参数Time的操作导致命令注入，可能导致远程攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Yealink SIP-T46U 108.86.0.118 cpe:2.3:a:yealink:sip-t46u:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-12219

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-12219

请登录查看更多情报信息。

Other References for CVE-2026-12219 (1)

Same Patch Batch · Yealink · 2026-06-15 · 6 CVEs total

CVE-2026-12220 8.0 HIGH Yealink SIP-T46U Firmware Chunk Upload handler accupgradebychunk mod_upgrade.SparePartsUpl
CVE-2026-12218 8.0 HIGH Yealink SIP-T46U Web FastCGI Service beforewifitest StartReportInformation stack-based ove
CVE-2026-12222 8.0 HIGH Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToothTest stack-based overflow
CVE-2026-12221 8.0 HIGH Yealink SIP-T46U Firmware Chunk Upload upgrade sprintf stack-based overflow
CVE-2026-12223 5.5 MEDIUM Yealink SIP-T46U Web FastCGI Service tftpuploadiperf mod_webd.TFTPUploadIperf command inje

IV. Related Vulnerabilities

Same product: SIP-T46U
Same vendor: Yealink
Same weakness: CWE-77

V. Comments for CVE-2026-12219

No comments yet

Leave a comment