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TI-2021-17788 Aliases CVE-2021-40866GHSA-89xh-mm48-p72f

Certain NETGEAR smart switches are affected by a remote admin password change by an…

Priority MEDIUM 46Published · Updated

Key facts

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

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

Summary

Certain NETGEAR smart switches are affected by a remote admin password change by an unauthenticated attacker via the (disabled by default) /sqfs/bin/sccd daemon, which fails to check authentication when the authentication TLV is missing from a received NSDP packet. This affects GC108P before 1.0.8.2, GC108PP before 1.0.8.2, GS108Tv3 before 7.0.7.2, GS110TPP before 7.0.7.2, GS110TPv3 before 7.0.7.2, GS110TUP before 1.0.5.3, GS308T before 1.0.3.2, GS310TP before 1.0.3.2, GS710TUP before 1.0.5.3, GS716TP before 1.0.4.2, GS716TPP before 1.0.4.2, GS724TPP before 2.0.6.3, GS724TPv2 before 2.0.6.3, GS728TPPv2 before 6.0.8.2, GS728TPv2 before 6.0.8.2, GS750E before 1.0.1.10, GS752TPP before 6.0.8.2, GS752TPv2 before 6.0.8.2, MS510TXM before 1.0.4.2, and MS510TXUP before 1.0.4.2.

Why it matters now

EPSS 0.01756 78th 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

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 · 40

CPEVersionsRoleVendor
cpe:2.3:o:netgear:gc108p_firmware:*:*:*:*:*:*:*:*before 1.0.8.2VulnerableNETGEAR
cpe:2.3:h:netgear:gc108p:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gc108pp_firmware:*:*:*:*:*:*:*:*before 1.0.8.2VulnerableNETGEAR
cpe:2.3:h:netgear:gc108pp:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs108t_firmware:*:*:*:*:*:*:*:*before 7.0.7.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs108tv3:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs110tpp_firmware:*:*:*:*:*:*:*:*before 7.0.7.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs110tpp:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs110tp_firmware:*:*:*:*:*:*:*:*before 7.0.7.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs110tp:v3:*:*:*:*:*:*:*v3Running onNETGEAR
  • cpe:2.3:o:netgear:gc108p_firmware:*:*:*:*:*:*:*:* Versions before 1.0.8.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gc108p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gc108pp_firmware:*:*:*:*:*:*:*:* Versions before 1.0.8.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gc108pp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs108t_firmware:*:*:*:*:*:*:*:* Versions before 7.0.7.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs108tv3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs110tpp_firmware:*:*:*:*:*:*:*:* Versions before 7.0.7.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs110tpp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs110tp_firmware:*:*:*:*:*:*:*:* Versions before 7.0.7.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs110tp:v3:*:*:*:*:*:*:* Versions v3 Running on ·NETGEAR
Show 30 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:netgear:gs110tup_firmware:*:*:*:*:*:*:*:*before 1.0.5.3VulnerableNETGEAR
cpe:2.3:h:netgear:gs110tup:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs308t_firmware:*:*:*:*:*:*:*:*before 1.0.3.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs308t:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs310tp_firmware:*:*:*:*:*:*:*:*before 1.0.3.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs310tp:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs710tup_firmware:*:*:*:*:*:*:*:*before 1.0.5.3VulnerableNETGEAR
cpe:2.3:h:netgear:gs710tup:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs716tp_firmware:*:*:*:*:*:*:*:*before 1.0.4.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs716tp:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs716tpp_firmware:*:*:*:*:*:*:*:*before 1.0.4.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs716tpp:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs724tpp_firmware:*:*:*:*:*:*:*:*before 2.0.6.3VulnerableNETGEAR
cpe:2.3:h:netgear:gs724tpp:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs724tp_firmware:*:*:*:*:*:*:*:*before 2.0.6.3VulnerableNETGEAR
cpe:2.3:h:netgear:gs724tp:v2:*:*:*:*:*:*:*v2Running onNETGEAR
cpe:2.3:o:netgear:gs728tpp_firmware:*:*:*:*:*:*:*:*before 6.0.8.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs728tpp:v2:*:*:*:*:*:*:*v2Running onNETGEAR
cpe:2.3:o:netgear:gs728tp_firmware:*:*:*:*:*:*:*:*before 6.0.8.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs728tp:v2:*:*:*:*:*:*:*v2Running onNETGEAR
cpe:2.3:o:netgear:gs750e_firmware:*:*:*:*:*:*:*:*before 1.0.1.10VulnerableNETGEAR
cpe:2.3:h:netgear:gs750e:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs752tpp_firmware:*:*:*:*:*:*:*:*before 6.0.8.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs752tpp:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:gs752tp_firmware:*:*:*:*:*:*:*:*before 6.0.8.2VulnerableNETGEAR
cpe:2.3:h:netgear:gs752tp:v2:*:*:*:*:*:*:*v2Running onNETGEAR
cpe:2.3:o:netgear:ms510txm_firmware:*:*:*:*:*:*:*:*before 1.0.4.2VulnerableNETGEAR
cpe:2.3:h:netgear:ms510txm:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
cpe:2.3:o:netgear:ms510txup_firmware:*:*:*:*:*:*:*:*before 1.0.4.2VulnerableNETGEAR
cpe:2.3:h:netgear:ms510txup:-:*:*:*:*:*:*:*not specified by NVDRunning onNETGEAR
  • cpe:2.3:o:netgear:gs110tup_firmware:*:*:*:*:*:*:*:* Versions before 1.0.5.3 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs110tup:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs308t_firmware:*:*:*:*:*:*:*:* Versions before 1.0.3.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs308t:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs310tp_firmware:*:*:*:*:*:*:*:* Versions before 1.0.3.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs310tp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs710tup_firmware:*:*:*:*:*:*:*:* Versions before 1.0.5.3 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs710tup:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs716tp_firmware:*:*:*:*:*:*:*:* Versions before 1.0.4.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs716tp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs716tpp_firmware:*:*:*:*:*:*:*:* Versions before 1.0.4.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs716tpp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs724tpp_firmware:*:*:*:*:*:*:*:* Versions before 2.0.6.3 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs724tpp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs724tp_firmware:*:*:*:*:*:*:*:* Versions before 2.0.6.3 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs724tp:v2:*:*:*:*:*:*:* Versions v2 Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs728tpp_firmware:*:*:*:*:*:*:*:* Versions before 6.0.8.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs728tpp:v2:*:*:*:*:*:*:* Versions v2 Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs728tp_firmware:*:*:*:*:*:*:*:* Versions before 6.0.8.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs728tp:v2:*:*:*:*:*:*:* Versions v2 Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs750e_firmware:*:*:*:*:*:*:*:* Versions before 1.0.1.10 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs750e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs752tpp_firmware:*:*:*:*:*:*:*:* Versions before 6.0.8.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs752tpp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:gs752tp_firmware:*:*:*:*:*:*:*:* Versions before 6.0.8.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:gs752tp:v2:*:*:*:*:*:*:* Versions v2 Running on ·NETGEAR
  • cpe:2.3:o:netgear:ms510txm_firmware:*:*:*:*:*:*:*:* Versions before 1.0.4.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:ms510txm:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR
  • cpe:2.3:o:netgear:ms510txup_firmware:*:*:*:*:*:*:*:* Versions before 1.0.4.2 Vulnerable ·NETGEAR
  • cpe:2.3:h:netgear:ms510txup:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NETGEAR

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40866
  2. 2026-10-03 Alias added: GHSA-89xh-mm48-p72f

References

Exploit 1

Advisory 1

  • TI-2021-18143 Certain NETGEAR smart switches are affected by a \n injection in the web UI's password… CVSS 3.1HIGH 8.8
  • TI-2021-12916 Certain NETGEAR devices are affected by command injection by an unauthenticated attacker… CVSS 3.1CRITICAL 9.8
  • TI-2021-20644 Certain NETGEAR devices are affected by command injection by an authenticated user. CVSS 3.1HIGH 8.8
  • TI-2021-17789 Certain NETGEAR smart switches are affected by an authentication hijacking race-condition… CVSS 3.1HIGH 7.8

Sources

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