CVE-2020-35800 [Critical] | Security Vulnerability in Ac2100 Firmware

Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects AC2100 before 1.2.0.72, AC2400 before 1.2.0.72, AC2600 before 1.2.0.72, CBK40 before 2.5.0.10, CBR40 before 2.5.0.10, D6000 before 1.0.0.80, D6220 before 1.0.0.60, D6400 before 1.0.0.94, D7000v2 before 1.0.0.62, D7800 before 1.0.3.48, D8500 before 1.0.3.50, DC112A before 1.0.0.48, DGN2200v4 before 1.0.0.114, DM200 before 1.0.0.66, EAX20 before 1.0.0.36, EAX80 before 1.0.1.62, EX2700 before 1.0.1.58, EX3110 before 1.0.1.68, EX3700 before 1.0.0.84, EX3800 before 1.0.0.84, EX3920 before 1.0.0.84, EX6000 before 1.0.0.44, EX6100v2 before 1.0.1.94, EX6110 before 1.0.1.68, EX6120 before 1.0.0.54, EX6130 before 1.0.0.36, EX6150v1 before 1.0.0.46, EX6150v2 before 1.0.1.94, EX6200v1 before 1.0.3.94, EX6250 before 1.0.0.128, EX6400 before 1.0.2.152, EX6400v2 before 1.0.0.128, EX6410 before 1.0.0.128, EX6920 before 1.0.0.54, EX7000 before 1.0.1.90, EX7300 before 1.0.2.152, EX7300v2 before 1.0.0.128, EX7320 before 1.0.0.128, EX7500 before 1.0.0.68, EX7700 before 1.0.0.210, EX8000 before 1.0.1.224, MK62 before 1.0.5.102, MR60 before 1.0.5.102, MS60 before 1.0.5.102, R6120 before 1.0.0.70, R6220 before 1.1.0.100, R6230 before 1.1.0.100, R6250 before 1.0.4.42, R6260 before 1.1.0.76, R6300v2 before 1.0.4.42, R6330 before 1.1.0.76, R6350 before 1.1.0.76, R6400v1 before 1.0.1.62, R6400v2 before 1.0.4.98, R6700v1 before 1.0.2.16, R6700v2 before 1.2.0.72, R6700v3 before 1.0.4.98, R6800 before 1.2.0.72, R6800 before 1.2.0.72, R6850 before 1.1.0.76, R6900 before 1.0.2.16, R6900P before 1.3.2.124, R6900v2 before 1.2.0.72, R7000 before 1.0.11.106, R7000P before 1.3.2.124, R7100LG before 1.0.0.56, R7200 before 1.2.0.72, R7350 before 1.2.0.72, R7400 before 1.2.0.72, R7450 before 1.2.0.72, R7500v2 before 1.0.3.48, R7800 before 1.0.2.74, R7850 before 1.0.5.60, R7900 before 1.0.4.26, R7900P before 1.4.1.62, R7960P before 1.4.1.62, R8000 before 1.0.4.58, R8000P before 1.4.1.62, R8300 before 1.0.2.134, R8500 before 1.0.2.134, R8900 before 1.0.5.24, R9000 before 1.0.5.24, RAX120 before 1.0.1.136, RAX15 before 1.0.1.64, RAX20 before 1.0.1.64, RAX200 before 1.0.5.24, RAX35 before 1.0.3.80, RAX40 before 1.0.3.80, RAX45 before 1.0.2.64, RAX50 before 1.0.2.64, RAX75 before 1.0.3.102, RAX80 before 1.0.3.102, RBK12 before 2.6.1.44, RBR10 before 2.6.1.44, RBS10 before 2.6.1.44, RBK20 before 2.6.1.38, RBR20 before 2.6.1.36, RBS20 before 2.6.1.38, RBK40 before 2.6.1.38, RBR40 before 2.6.1.38, RBS40 before 2.6.1.38, RBK50 before 2.6.1.40, RBR50 before 2.6.1.40, RBS50 before 2.6.1.40, RBK752 before 3.2.16.6, RBR750 before 3.2.16.6, RBS750 before 3.2.16.6, RBK842 before 3.2.16.6, RBR840 before 3.2.16.6, RBS840 before 3.2.16.6, RBK852 before 3.2.16.6, RBR850 before 3.2.16.6, RBS850 before 3.2.16.6, RBS40V before 2.5.1.6, RBS40V-200 before 1.0.0.46, RBS50Y before 2.6.1.40, RBW30 before 2.5.0.4, RS400 before 1.5.0.48, WN2500RPv2 before 1.0.1.56, WN3000RPv3 before 1.0.2.86, WN3500RPv1 before 1.0.0.28, WNDR3400v3 before 1.0.1.32, WNR1000v3 before 1.0.2.78, WNR2000v2 before 1.2.0.12, XR300 before 1.0.3.50, XR450 before 2.3.2.66, XR500 before 2.3.2.66, and XR700 before 1.0.1.34.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-12-20	1.25%	1.50%	+0.25%
2	2025-03-30	22.49%	1.25%	-21.24%
3	2025-03-29	—	22.49%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-12-20

1.25%

1.50%

+0.25%

2025-03-30

22.49%

1.25%

-21.24%

2025-03-29

—

22.49%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.4	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	3.9	5.5	[email protected]
9.4	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:L) Might cause slowdowns, glitches, or partial disruption—not a full brick.	3.9	5.5	[email protected]
9.7	2.0	HIGH	`AV:N/AC:L/Au:N/C:C/I:C/A:P` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:C) Complete confidentiality impact. Integrity impact (I:C) Complete integrity impact. Availability impact (A:P) Partial availability impact.	10.0	9.5	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

9.4

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

3.9

5.5

[email protected]

9.4

3.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:L): Might cause slowdowns, glitches, or partial disruption—not a full brick.

3.9

5.5

[email protected]

9.7

2.0

HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:P Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:C): Complete confidentiality impact.
Integrity impact (I:C): Complete integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

9.5

[email protected]

Affected software / configurations for CVE-2020-35800

Vendor	Product	Version	Raw CPE
netgear	ac2100_firmware	< 1.2.0.72	cpe:2.3:o:netgear:ac2100_firmware::::::::
netgear	ac2400_firmware	< 1.2.0.72	cpe:2.3:o:netgear:ac2400_firmware::::::::
netgear	ac2600_firmware	< 1.2.0.72	cpe:2.3:o:netgear:ac2600_firmware::::::::
netgear	cbk40_firmware	< 2.5.0.10	cpe:2.3:o:netgear:cbk40_firmware::::::::
netgear	cbr40_firmware	< 2.5.0.10	cpe:2.3:o:netgear:cbr40_firmware::::::::
netgear	d6000_firmware	< 1.0.0.80	cpe:2.3:o:netgear:d6000_firmware::::::::
netgear	d6220_firmware	< 1.0.0.60	cpe:2.3:o:netgear:d6220_firmware::::::::
netgear	d6400_firmware	< 1.0.0.94	cpe:2.3:o:netgear:d6400_firmware::::::::
netgear	d7000v2_firmware	< 1.0.0.62	cpe:2.3:o:netgear:d7000v2_firmware::::::::
netgear	d7800_firmware	< 1.0.3.48	cpe:2.3:o:netgear:d7800_firmware::::::::
netgear	d8500_firmware	< 1.0.3.50	cpe:2.3:o:netgear:d8500_firmware::::::::
netgear	dc112a_firmware	< 1.0.0.48	cpe:2.3:o:netgear:dc112a_firmware::::::::
netgear	dgn2200v4_firmware	< 1.0.0.114	cpe:2.3:o:netgear:dgn2200v4_firmware::::::::
netgear	dm200_firmware	< 1.0.0.66	cpe:2.3:o:netgear:dm200_firmware::::::::
netgear	eax20_firmware	< 1.0.0.36	cpe:2.3:o:netgear:eax20_firmware::::::::
netgear	eax80_firmware	< 1.0.1.62	cpe:2.3:o:netgear:eax80_firmware::::::::
netgear	ex2700_firmware	< 1.0.1.58	cpe:2.3:o:netgear:ex2700_firmware::::::::
netgear	ex3110_firmware	< 1.0.1.68	cpe:2.3:o:netgear:ex3110_firmware::::::::
netgear	ex3700_firmware	< 1.0.0.84	cpe:2.3:o:netgear:ex3700_firmware::::::::
netgear	ex3800_firmware	< 1.0.0.84	cpe:2.3:o:netgear:ex3800_firmware::::::::
netgear	ex3920_firmware	< 1.0.0.84	cpe:2.3:o:netgear:ex3920_firmware::::::::
netgear	ex6000_firmware	< 1.0.0.44	cpe:2.3:o:netgear:ex6000_firmware::::::::
netgear	ex6100v2_firmware	< 1.0.1.94	cpe:2.3:o:netgear:ex6100v2_firmware::::::::
netgear	ex6110_firmware	< 1.0.1.68	cpe:2.3:o:netgear:ex6110_firmware::::::::
netgear	ex6120_firmware	< 1.0.0.54	cpe:2.3:o:netgear:ex6120_firmware::::::::
netgear	ex6130_firmware	< 1.0.0.36	cpe:2.3:o:netgear:ex6130_firmware::::::::
netgear	ex6150v1_firmware	< 1.0.0.46	cpe:2.3:o:netgear:ex6150v1_firmware::::::::
netgear	ex6150v2_firmware	< 1.0.1.94	cpe:2.3:o:netgear:ex6150v2_firmware::::::::
netgear	ex6200v1_firmware	< 1.0.3.94	cpe:2.3:o:netgear:ex6200v1_firmware::::::::
netgear	ex6250_firmware	< 1.0.0.128	cpe:2.3:o:netgear:ex6250_firmware::::::::
netgear	ex6400_firmware	< 1.0.2.152	cpe:2.3:o:netgear:ex6400_firmware::::::::
netgear	ex6400v2_firmware	< 1.0.0.128	cpe:2.3:o:netgear:ex6400v2_firmware::::::::
netgear	ex6410_firmware	< 1.0.0.128	cpe:2.3:o:netgear:ex6410_firmware::::::::
netgear	ex6920_firmware	< 1.0.0.54	cpe:2.3:o:netgear:ex6920_firmware::::::::
netgear	ex7000_firmware	< 1.0.1.90	cpe:2.3:o:netgear:ex7000_firmware::::::::
netgear	ex7300_firmware	< 1.0.2.152	cpe:2.3:o:netgear:ex7300_firmware::::::::
netgear	ex7300v2_firmware	< 1.0.0.128	cpe:2.3:o:netgear:ex7300v2_firmware::::::::
netgear	ex7320_firmware	< 1.0.0.128	cpe:2.3:o:netgear:ex7320_firmware::::::::
netgear	ex7500_firmware	< 1.0.0.68	cpe:2.3:o:netgear:ex7500_firmware::::::::
netgear	ex7700_firmware	< 1.0.0.210	cpe:2.3:o:netgear:ex7700_firmware::::::::
netgear	ex8000_firmware	< 1.0.1.224	cpe:2.3:o:netgear:ex8000_firmware::::::::
netgear	mk62_firmware	< 1.0.5.102	cpe:2.3:o:netgear:mk62_firmware::::::::
netgear	mr60_firmware	< 1.0.5.102	cpe:2.3:o:netgear:mr60_firmware::::::::
netgear	ms60_firmware	< 1.0.5.102	cpe:2.3:o:netgear:ms60_firmware::::::::
netgear	r6120_firmware	< 1.0.0.70	cpe:2.3:o:netgear:r6120_firmware::::::::
netgear	r6220_firmware	< 1.1.0.100	cpe:2.3:o:netgear:r6220_firmware::::::::
netgear	r6230_firmware	< 1.1.0.100	cpe:2.3:o:netgear:r6230_firmware::::::::
netgear	r6250_firmware	< 1.0.4.42	cpe:2.3:o:netgear:r6250_firmware::::::::
netgear	r6260_firmware	< 1.1.0.76	cpe:2.3:o:netgear:r6260_firmware::::::::
netgear	r6300v2_firmware	< 1.0.4.42	cpe:2.3:o:netgear:r6300v2_firmware::::::::
netgear	r6330_firmware	< 1.1.0.76	cpe:2.3:o:netgear:r6330_firmware::::::::
netgear	r6350_firmware	< 1.1.0.76	cpe:2.3:o:netgear:r6350_firmware::::::::
netgear	r6400v1_firmware	< 1.0.1.62	cpe:2.3:o:netgear:r6400v1_firmware::::::::
netgear	r6400v2_firmware	< 1.0.4.98	cpe:2.3:o:netgear:r6400v2_firmware::::::::
netgear	r6700v1_firmware	< 1.0.2.16	cpe:2.3:o:netgear:r6700v1_firmware::::::::
netgear	r6700v2_firmware	< 1.2.0.72	cpe:2.3:o:netgear:r6700v2_firmware::::::::
netgear	r6700v3_firmware	< 1.0.4.98	cpe:2.3:o:netgear:r6700v3_firmware::::::::
netgear	r6800_firmware	< 1.2.0.72	cpe:2.3:o:netgear:r6800_firmware::::::::
netgear	r6850_firmware	< 1.1.0.76	cpe:2.3:o:netgear:r6850_firmware::::::::
netgear	r6900_firmware	< 1.0.2.16	cpe:2.3:o:netgear:r6900_firmware::::::::
netgear	r6900p_firmware	< 1.3.2.124	cpe:2.3:o:netgear:r6900p_firmware::::::::
netgear	r6900v2_firmware	< 1.2.0.72	cpe:2.3:o:netgear:r6900v2_firmware::::::::
netgear	r7000_firmware	< 1.0.11.106	cpe:2.3:o:netgear:r7000_firmware::::::::
netgear	r7000p_firmware	< 1.3.2.124	cpe:2.3:o:netgear:r7000p_firmware::::::::
netgear	r7100lg_firmware	< 1.0.0.56	cpe:2.3:o:netgear:r7100lg_firmware::::::::
netgear	r7200_firmware	< 1.2.0.72	cpe:2.3:o:netgear:r7200_firmware::::::::
netgear	r7350_firmware	< 1.2.0.72	cpe:2.3:o:netgear:r7350_firmware::::::::
netgear	r7400_firmware	< 1.2.0.72	cpe:2.3:o:netgear:r7400_firmware::::::::
netgear	r7450_firmware	< 1.2.0.72	cpe:2.3:o:netgear:r7450_firmware::::::::
netgear	r7500v2_firmware	< 1.0.3.48	cpe:2.3:o:netgear:r7500v2_firmware::::::::
netgear	r7800_firmware	< 1.0.2.74	cpe:2.3:o:netgear:r7800_firmware::::::::
netgear	r7850_firmware	< 1.0.5.60	cpe:2.3:o:netgear:r7850_firmware::::::::
netgear	r7900_firmware	< 1.0.4.26	cpe:2.3:o:netgear:r7900_firmware::::::::
netgear	r7900p_firmware	< 1.4.1.62	cpe:2.3:o:netgear:r7900p_firmware::::::::
netgear	r7960p_firmware	< 1.4.1.62	cpe:2.3:o:netgear:r7960p_firmware::::::::
netgear	r8000_firmware	< 1.0.4.58	cpe:2.3:o:netgear:r8000_firmware::::::::
netgear	r8000p_firmware	< 1.4.1.62	cpe:2.3:o:netgear:r8000p_firmware::::::::
netgear	r8300_firmware	< 1.0.2.134	cpe:2.3:o:netgear:r8300_firmware::::::::
netgear	r8500_firmware	< 1.0.2.134	cpe:2.3:o:netgear:r8500_firmware::::::::
netgear	r8900_firmware	< 1.0.5.24	cpe:2.3:o:netgear:r8900_firmware::::::::

References for CVE-2020-35800

URL	Tags
https://kb.netgear.com/000062733/Security-Advisory-for-Security-Misconfiguration-on-Some-Routers-Range-Extenders-and-Orbi-WiFi-Systems-PSV-2020-0112	Vendor Advisory

URL

CVE-2020-35800

Exploit prediction scoring system (EPSS) score for CVE-2020-35800

Common vulnerability scoring system (CVSS) metrics for CVE-2020-35800

Weakness enumeration for CVE-2020-35800

Affected software / configurations for CVE-2020-35800

References for CVE-2020-35800