CVE-2026-12219Public exploitNetwork attack vector

Authenticated command execution via diagnostic Time parameter

Published Jun 15, 2026 · Updated Jun 15, 2026

Command injection in Yealink SIP-T46U 108.86.0.118 allows remote authenticated users to execute arbitrary commands via crafted diagnostic requests. The Web FastCGI Service passes the attacker-controlled Time argument from /api/diagnosis/start to mod_diagnose.CommandShellByType without comprehensive input validation. Valid web-interface credentials and network access are required; successful exploitation executes commands on the phone and can crash its web service.

CVSS severity6.3
Medium
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Yealink SIP-T46U 108.86.0.118 allows remote authenticated users to execute arbitrary commands via crafted diagnostic requests. The Web FastCGI Service passes the attacker-controlled Time argument from /api/diagnosis/start to mod_diagnose.CommandShellByType without comprehensive input validation. Valid web-interface credentials and network access are required; successful exploitation executes commands on the phone and can crash its web service.

The record

CVE
CVE-2026-12219
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
Yealink
Product
SIP-T46U
Classifications
CWE-77, CWE-74, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=108.86.0.118

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Yealink · SIP-T46Uversion=108.86.0.118

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3YealinkCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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