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TI-2021-08840 Aliases CVE-2021-27328GHSA-9fhx-hcwq-8qwv

Yeastar NeoGate TG400 91.3.0.3 devices are affected by Directory Traversal.

Priority LOW 38CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

Yeastar NeoGate TG400 91.3.0.3 devices are affected by Directory Traversal. An authenticated user can decrypt firmware and can read sensitive information, such as a password or decryption key.

Why it matters now

EPSS 0.06356 93rd percentileScored 2026-11-08
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:yeastar:neogate_tg400_firmware:91.3.0.3:*:*:*:*:*:*:*91.3.0.3VulnerableYeastar
cpe:2.3:h:yeastar:neogate_tg400:-:*:*:*:*:*:*:*not specified by NVDRunning onYeastar
  • cpe:2.3:o:yeastar:neogate_tg400_firmware:91.3.0.3:*:*:*:*:*:*:* Versions 91.3.0.3 Vulnerable ·Yeastar
  • cpe:2.3:h:yeastar:neogate_tg400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Yeastar

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27328
  2. 2026-10-03 Alias added: GHSA-9fhx-hcwq-8qwv

References

Exploit 2

Sources

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