CVE-2021-45641 [Medium] | Security Vulnerability in D3600 Firmware

Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects D3600 before 1.0.0.72, D6000 before 1.0.0.72, D6200 before 1.1.00.34, D6220 before 1.0.0.52, D6400 before 1.0.0.86, D7000 before 1.0.1.74, D7000v2 before 1.0.0.53, D7800 before 1.0.1.56, D8500 before 1.0.3.44, DC112A before 1.0.0.42, DGN2200Bv4 before 1.0.0.109, DGN2200v4 before 1.0.0.110, DM200 before 1.0.0.61, EX3700 before 1.0.0.76, EX3800 before 1.0.0.76, EX6120 before 1.0.0.46, EX6130 before 1.0.0.28, EX7000 before 1.0.1.78, PR2000 before 1.0.0.28, R6220 before 1.1.0.100, R6230 before 1.1.0.100, R6250 before 1.0.4.34, R6300v2 before 1.0.4.34, R6400 before 1.0.1.46, R6400v2 before 1.0.2.66, R6700v3 before 1.0.2.66, R6700 before 1.0.2.6, R6900 before 1.0.2.6, R7000 before 1.0.9.34, R7100LG before 1.0.0.50, R7500v2 before 1.0.3.40, R7900P before 1.4.1.50, R8000P before 1.4.1.50, R8900 before 1.0.4.12, R9000 before 1.0.4.12, RBK20 before 2.3.0.28, RBR20 before 2.3.0.28, RBS20 before 2.3.0.28, RBK40 before 2.3.0.28, RBR40 before 2.3.0.28, RBS40 before 2.3.0.28, RBK50 before 2.3.0.32, RBR50 before 2.3.0.32, RBS50 before 2.3.0.32, WN3000RPv2 before 1.0.0.78, WNDR3400v3 before 1.0.1.24, WNR2000v5 before 1.0.0.70, WNR2020 before 1.1.0.62, and XR500 before 2.3.2.56.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.37%	0.69%	+0.32%
2	2025-03-30	0.53%	0.37%	-0.16%
3	2025-03-29	—	0.53%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.37%

0.69%

+0.32%

2025-03-30

0.53%

0.37%

-0.16%

2025-03-29

—

0.53%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
4.6	3.1	MEDIUM	`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N` Click to expand Attack vector (AV:A) Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet. 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:L) A normal user session is enough; they don’t have to be admin. 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:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	2.1	2.5	[email protected]
8.8	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H` 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:L) A normal user session is enough; they don’t have to be admin. 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:H) Could take the service down hard or make it unusable for people who depend on it.	2.8	5.9	[email protected]
6.5	2.0	MEDIUM	`AV:N/AC:L/Au:S/C:P/I:P/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:S) A single authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	8.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

4.6

3.1

MEDIUM

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

Attack vector (AV:A): Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
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:L): A normal user session is enough; they don’t have to be admin.
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:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

2.1

2.5

[email protected]

8.8

3.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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:L): A normal user session is enough; they don’t have to be admin.
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:H): Could take the service down hard or make it unusable for people who depend on it.

2.8

5.9

[email protected]

6.5

2.0

MEDIUM

AV:N/AC:L/Au:S/C:P/I:P/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:S): A single authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

8.0

6.4

[email protected]

Affected software / configurations for CVE-2021-45641

Vendor	Product	Version	Raw CPE
netgear	d3600_firmware	< 1.0.0.72	cpe:2.3:o:netgear:d3600_firmware::::::::
netgear	d6000_firmware	< 1.0.0.72	cpe:2.3:o:netgear:d6000_firmware::::::::
netgear	d6200_firmware	< 1.1.00.34	cpe:2.3:o:netgear:d6200_firmware::::::::
netgear	d6220_firmware	< 1.0.0.52	cpe:2.3:o:netgear:d6220_firmware::::::::
netgear	d6400_firmware	< 1.0.0.86	cpe:2.3:o:netgear:d6400_firmware::::::::
netgear	d7000_firmware	< 1.0.1.74	cpe:2.3:o:netgear:d7000_firmware::::::::
netgear	d7000v2_firmware	< 1.0.0.53	cpe:2.3:o:netgear:d7000v2_firmware::::::::
netgear	d7800_firmware	< 1.0.1.56	cpe:2.3:o:netgear:d7800_firmware::::::::
netgear	d8500_firmware	< 1.0.3.44	cpe:2.3:o:netgear:d8500_firmware::::::::
netgear	dc112a_firmware	< 1.0.0.42	cpe:2.3:o:netgear:dc112a_firmware::::::::
netgear	dgn2200v4_firmware	< 1.0.0.110	cpe:2.3:o:netgear:dgn2200v4_firmware::::::::
netgear	dgn2200bv4_firmware	< 1.0.0.109	cpe:2.3:o:netgear:dgn2200bv4_firmware::::::::
netgear	dm200_firmware	< 1.0.0.61	cpe:2.3:o:netgear:dm200_firmware::::::::
netgear	ex3700_firmware	< 1.0.0.76	cpe:2.3:o:netgear:ex3700_firmware::::::::
netgear	ex3800_firmware	< 1.0.0.76	cpe:2.3:o:netgear:ex3800_firmware::::::::
netgear	ex6120_firmware	< 1.0.0.46	cpe:2.3:o:netgear:ex6120_firmware::::::::
netgear	ex6130_firmware	< 1.0.0.28	cpe:2.3:o:netgear:ex6130_firmware::::::::
netgear	ex7000_firmware	< 1.0.1.78	cpe:2.3:o:netgear:ex7000_firmware::::::::
netgear	pr2000_firmware	< 1.0.0.28	cpe:2.3:o:netgear:pr2000_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	< 1.0.4.34	cpe:2.3:o:netgear:r6250_firmware::::::::
netgear	r6300v2_firmware	< 1.0.4.34	cpe:2.3:o:netgear:r6300v2_firmware::::::::
netgear	r6400_firmware	< 1.0.1.46	cpe:2.3:o:netgear:r6400_firmware::::::::
netgear	r6400v2_firmware	< 1.0.2.66	cpe:2.3:o:netgear:r6400v2_firmware::::::::
netgear	r6700_firmware	< 1.0.2.6	cpe:2.3:o:netgear:r6700_firmware::::::::
netgear	r6700v3_firmware	< 1.0.2.66	cpe:2.3:o:netgear:r6700v3_firmware::::::::
netgear	r6900_firmware	< 1.0.2.6	cpe:2.3:o:netgear:r6900_firmware::::::::
netgear	r7000_firmware	< 1.0.9.34	cpe:2.3:o:netgear:r7000_firmware::::::::
netgear	r7100lg_firmware	< 1.0.0.50	cpe:2.3:o:netgear:r7100lg_firmware::::::::
netgear	r7500v2_firmware	< 1.0.3.40	cpe:2.3:o:netgear:r7500v2_firmware::::::::
netgear	r7900p_firmware	< 1.4.1.50	cpe:2.3:o:netgear:r7900p_firmware::::::::
netgear	r8000p_firmware	< 1.4.1.50	cpe:2.3:o:netgear:r8000p_firmware::::::::
netgear	r8900_firmware	< 1.0.4.12	cpe:2.3:o:netgear:r8900_firmware::::::::
netgear	r9000_firmware	< 1.0.4.12	cpe:2.3:o:netgear:r9000_firmware::::::::
netgear	rbk20_firmware	< 2.3.0.28	cpe:2.3:o:netgear:rbk20_firmware::::::::
netgear	rbk40_firmware	< 2.3.0.28	cpe:2.3:o:netgear:rbk40_firmware::::::::
netgear	rbk50_firmware	< 2.3.0.32	cpe:2.3:o:netgear:rbk50_firmware::::::::
netgear	rbr20_firmware	< 2.3.0.28	cpe:2.3:o:netgear:rbr20_firmware::::::::
netgear	rbr40_firmware	< 2.3.0.28	cpe:2.3:o:netgear:rbr40_firmware::::::::
netgear	rbr50_firmware	< 2.3.0.32	cpe:2.3:o:netgear:rbr50_firmware::::::::
netgear	rbs20_firmware	< 2.3.0.28	cpe:2.3:o:netgear:rbs20_firmware::::::::
netgear	rbs40_firmware	< 2.3.0.28	cpe:2.3:o:netgear:rbs40_firmware::::::::
netgear	rbs50_firmware	< 2.3.0.32	cpe:2.3:o:netgear:rbs50_firmware::::::::
netgear	wn3000rpv2_firmware	< 1.0.0.78	cpe:2.3:o:netgear:wn3000rpv2_firmware::::::::
netgear	wnr2000v5_firmware	< 1.0.0.70	cpe:2.3:o:netgear:wnr2000v5_firmware::::::::
netgear	wndr3400v3_firmware	< 1.0.1.24	cpe:2.3:o:netgear:wndr3400v3_firmware::::::::
netgear	wnr2020_firmware	< 1.1.0.62	cpe:2.3:o:netgear:wnr2020_firmware::::::::
netgear	xr500_firmware	< 2.3.2.56	cpe:2.3:o:netgear:xr500_firmware::::::::

References for CVE-2021-45641

URL	Tags
https://kb.netgear.com/000064053/Security-Advisory-for-Security-Misconfiguration-on-Some-Routers-Extenders-and-WiFi-Systems-PSV-2018-0624	Patch Vendor Advisory

URL

CVE-2021-45641

Exploit prediction scoring system (EPSS) score for CVE-2021-45641

Common vulnerability scoring system (CVSS) metrics for CVE-2021-45641

Weakness enumeration for CVE-2021-45641

Affected software / configurations for CVE-2021-45641

References for CVE-2021-45641