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TI-2026-01418 Aliases CVE-2026-1735GHSA-78fj-x79r-wh5j

Yealink MeetingBar A30 Diagnostic command injection

Priority MEDIUM 46CWE-74Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A weakness has been identified in Yealink MeetingBar A30 133.321.0.3. This issue affects some unknown processing of the component Diagnostic Handler. This manipulation causes command injection. It is feasible to perform the attack on the physical device. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01344 71st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
YealinkMeetingBar A30133.321.0.3—No fix listedCNA
  • MeetingBar A30 VendorYealink Affected 133.321.0.3 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-1735
  2. 2026-10-03 Alias added: GHSA-78fj-x79r-wh5j

References

Exploit 1

  • TI-2021-09018 Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-41051 An issue in Yealink T21P_E2 Phone 52.84.0.15 allows a remote normal privileged attacker… CVSS 3.1HIGH 8.8
  • TI-2023-23573 An issue in YeaLinkSIP-T19P-E2 v.53.84.0.15 allows a remote privileged attacker to… CVSS 3.1HIGH 8.8
  • TI-2026-10514 Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToothTest stack-based overflow CVSS 4.0HIGH 8.6
  • TI-2026-10512 Yealink SIP-T46U Firmware Chunk Upload handler accupgradebychunk mod_upgrade.SparePartsUpload stack-based overflow CVSS 4.0HIGH 8.6
  • TI-2026-10510 Yealink SIP-T46U Web FastCGI Service beforewifitest StartReportInformation stack-based overflow CVSS 4.0HIGH 8.6
See all 42 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences