CVE-2021-45494 [High] | Security Vulnerability in Rbk352 Firmware

CVE-2021-45494 is rated Moderate Risk (43.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.37%). Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.17%	0.37%	+0.20%
2	2025-11-21	0.10%	0.17%	+0.07%
3	2025-11-18	—	0.10%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.17%

0.37%

+0.20%

2025-11-21

0.10%

0.17%

+0.07%

2025-11-18

—

0.10%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
8.4	3.1	HIGH	`CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H` 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:H) They need powerful rights—admin, root, or similar—before this pays off. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. 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.	1.7	6.0	[email protected]
4.5	3.1	MEDIUM	`CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:N/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:H) They need powerful rights—admin, root, or similar—before this pays off. 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:N) Data isn’t meaningfully altered or forged. Availability (A:N) Service keeps running; no real outage angle.	0.9	3.6	[email protected]
2.7	2.0	LOW	`AV:A/AC:L/Au:S/C:P/I:N/A:N` Click to expand Access vector (AV:A) Requires access to an adjacent network segment. 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:N) No integrity impact. Availability impact (A:N) No availability impact.	5.1	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

8.4

3.1

HIGH

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H 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:H): They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
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.

1.7

6.0

[email protected]

4.5

3.1

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:N/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:H): They need powerful rights—admin, root, or similar—before this pays off.
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:N): Data isn’t meaningfully altered or forged.
Availability (A:N): Service keeps running; no real outage angle.

0.9

3.6

[email protected]

2.7

2.0

LOW

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

Access vector (AV:A): Requires access to an adjacent network segment.
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:N): No integrity impact.
Availability impact (A:N): No availability impact.

5.1

2.9

[email protected]

Affected software / configurations for CVE-2021-45494

Vendor	Product	Version	Raw CPE
netgear	rbk352_firmware	< 4.4.0.10	cpe:2.3:o:netgear:rbk352_firmware::::::::
netgear	rbr350_firmware	< 4.4.0.10	cpe:2.3:o:netgear:rbr350_firmware::::::::
netgear	rbs350_firmware	< 4.4.0.10	cpe:2.3:o:netgear:rbs350_firmware::::::::

References for CVE-2021-45494

URL	Tags
https://kb.netgear.com/000064160/Security-Advisory-for-Arbitrary-File-Read-on-Some-WiFi-Systems-PSV-2021-0044	Patch Vendor Advisory

URL

CVE-2021-45494

Exploit prediction scoring system (EPSS) score for CVE-2021-45494

Common vulnerability scoring system (CVSS) metrics for CVE-2021-45494

Weakness enumeration for CVE-2021-45494

Affected software / configurations for CVE-2021-45494

References for CVE-2021-45494