CVE-2021-40866
Last modified
CVE-2021-40866 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 1.70% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Netgear | Gc108p Firmware | < 1.0.8.2 |
| Netgear | Gc108pp Firmware | < 1.0.8.2 |
| Netgear | Gs108t Firmware | < 7.0.7.2 |
| Netgear | Gs110tpp Firmware | < 7.0.7.2 |
| Netgear | Gs110tp Firmware | < 7.0.7.2 |
| Netgear | Gs110tup Firmware | < 1.0.5.3 |
| Netgear | Gs308t Firmware | < 1.0.3.2 |
| Netgear | Gs310tp Firmware | < 1.0.3.2 |
| Netgear | Gs710tup Firmware | < 1.0.5.3 |
| Netgear | Gs716tp Firmware | < 1.0.4.2 |
| Netgear | Gs716tpp Firmware | < 1.0.4.2 |
| Netgear | Gs724tpp Firmware | < 2.0.6.3 |
| Netgear | Gs724tp Firmware | < 2.0.6.3 |
| Netgear | Gs728tpp Firmware | < 6.0.8.2 |
| Netgear | Gs728tp Firmware | < 6.0.8.2 |
| Netgear | Gs750e Firmware | < 1.0.1.10 |
| Netgear | Gs752tpp Firmware | < 6.0.8.2 |
| Netgear | Gs752tp Firmware | < 6.0.8.2 |
| Netgear | Ms510txm Firmware | < 1.0.4.2 |
| Netgear | Ms510txup Firmware | < 1.0.4.2 |
References
- https://gynvael.coldwind.pl/?id=740Exploit, Third Party Advisory
- https://gynvael.coldwind.pl/?id=740Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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