CVE

CVE-2021-40866

Date: (C)2021-09-13   (M)2023-12-22

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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:		CVSS V2 Severity:
CVSS Score : 8.8		CVSS Score : 5.4
Exploit Score: 2.8		Exploit Score: 5.5
Impact Score: 5.9		Impact Score: 6.4
CVSS V3 Metrics:		CVSS V2 Metrics:
Attack Vector: ADJACENT_NETWORK		Access Vector: ADJACENT_NETWORK
Attack Complexity: LOW		Access Complexity: MEDIUM
Privileges Required: NONE		Authentication: NONE
User Interaction: NONE		Confidentiality: PARTIAL
Scope: UNCHANGED		Integrity: PARTIAL
Confidentiality: HIGH		Availability: PARTIAL
Integrity: HIGH
Availability: HIGH

Reference:

https://gynvael.coldwind.pl/?id=740

https://kb.netgear.com/000063978/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Smart-Switches-PSV-2021-0140-PSV-2021-0144-PSV-2021-0145