Read the docs
TI-2025-20739 Aliases CVE-2025-28170GHSA-7wqx-pvjm-73q6

Grandstream Networks GXP1628 <=1.0.4.130 is vulnerable to Incorrect Access Control.

Priority HIGH 66CWE-548Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Grandstream Networks GXP1628 <=1.0.4.130 is vulnerable to Incorrect Access Control. The device is configured with directory listing enabled, allowing unauthorized access to sensitive directories and files.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00351 28th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:grandstream:gxp1628_firmware:*:*:*:*:*:*:*:*up to 1.0.4.130VulnerableGrandstream
cpe:2.3:h:grandstream:gxp1628:-:*:*:*:*:*:*:*not specified by NVDRunning onGrandstream
  • cpe:2.3:o:grandstream:gxp1628_firmware:*:*:*:*:*:*:*:* Versions up to 1.0.4.130 Vulnerable ·Grandstream
  • cpe:2.3:h:grandstream:gxp1628:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Grandstream

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-28170
  2. 2026-10-03 Alias added: GHSA-7wqx-pvjm-73q6

References

  • TI-2026-01969 Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow CVSS 4.0CRITICAL 9.3
  • TI-2020-04667 Code injection in Grandstream GXP1600 Series CVSS 3.1HIGH 8.8
  • TI-2020-04666 Link following in Grandstream GXP1600 Series CVSS 3.1HIGH 8.8
  • TI-2018-12511 Shell Metacharacter Injection in the SSH configuration interface on Grandstream GXP16xx… CVSS 3.0CRITICAL 9.8
  • TI-2018-12510 A Malformed Input String to /cgi-bin/delete_CA on Grandstream GXP16xx VoIP 1.0.4.128… CVSS 3.0CRITICAL 9.8
  • TI-2018-12509 A Malformed Input String to /cgi-bin/api-get_line_status on Grandstream GXP16xx VoIP… CVSS 3.0MEDIUM 5.3

Sources