CVE-2021-38527 : Certain NETGEAR devices are affected by command injection by an unauthenticated

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.14, EX6100v2 before 1.0.1.98, EX6150v2 before 1.0.1.98, EX6250 before 1.0.0.132, EX6400 before 1.0.2.158, EX6400v2 before 1.0.0.132, EX6410 before 1.0.0.132, EX6420 before 1.0.0.132, EX7300 before 1.0.2.158, EX7300v2 before 1.0.0.132, EX7320 before 1.0.0.132, EX7700 before 1.0.0.216, EX8000 before 1.0.1.232, R7800 before 1.0.2.78, 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 2.6.1.36, 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, RBK852 before 3.2.16.6, RBR850 before 3.2.16.6, RBS850 before 3.2.16.6, RBS40V before 2.6.2.4, RBS50Y before 2.6.1.40, RBW30 before 2.6.2.2, and XR500 before 2.3.2.114.

Published 2021-08-11 00:16:19

Updated 2021-08-19 18:37:37

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2021-38527

Netgear » Ex6150 Firmware
Versions before (<) 1.0.1.98
cpe:2.3:o:netgear:ex6150_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex6150 » Version: V2
Netgear » Ex6100 Firmware
Versions before (<) 1.0.1.98
cpe:2.3:o:netgear:ex6100_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex6100 » Version: V2
Netgear » R7800 Firmware
Versions before (<) 1.0.2.78
cpe:2.3:o:netgear:r7800_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » R7800 » Version: N/A
Netgear » Ex6400 Firmware
Versions before (<) 1.0.2.158
cpe:2.3:o:netgear:ex6400_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex6400 » Version: N/A
Netgear » Ex6400 Firmware
Versions before (<) 1.0.0.132
cpe:2.3:o:netgear:ex6400_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex6400 » Version: V2
Netgear » Ex7300 Firmware
Versions before (<) 1.0.2.158
cpe:2.3:o:netgear:ex7300_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex7300 » Version: N/A
Netgear » Ex8000 Firmware
Versions before (<) 1.0.1.232
cpe:2.3:o:netgear:ex8000_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex8000 » Version: N/A
Netgear » Xr500 Firmware
Versions before (<) 2.3.2.114
cpe:2.3:o:netgear:xr500_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Xr500 » Version: N/A
Netgear » Rbw30 Firmware
Versions before (<) 2.6.2.2
cpe:2.3:o:netgear:rbw30_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbw30 » Version: N/A
Netgear » Rbr20 Firmware
Versions before (<) 2.6.1.36
cpe:2.3:o:netgear:rbr20_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbr20 » Version: N/A
Netgear » Rbs20 Firmware
Versions before (<) 2.6.1.38
cpe:2.3:o:netgear:rbs20_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbs20 » Version: N/A
Netgear » Rbk20 Firmware
Versions before (<) 2.6.1.38
cpe:2.3:o:netgear:rbk20_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbk20 » Version: N/A
Netgear » Rbr40 Firmware
Versions before (<) 2.6.1.36
cpe:2.3:o:netgear:rbr40_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbr40 » Version: N/A
Netgear » Rbs40 Firmware
Versions before (<) 2.6.1.38
cpe:2.3:o:netgear:rbs40_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbs40 » Version: N/A
Netgear » Rbk40 Firmware
Versions before (<) 2.6.1.38
cpe:2.3:o:netgear:rbk40_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbk40 » Version: N/A
Netgear » Rbr50 Firmware
Versions before (<) 2.6.1.40
cpe:2.3:o:netgear:rbr50_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbr50 » Version: N/A
Netgear » Rbs50 Firmware
Versions before (<) 2.6.1.40
cpe:2.3:o:netgear:rbs50_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbs50 » Version: N/A
Netgear » Rbk50 Firmware
Versions before (<) 2.6.1.40
cpe:2.3:o:netgear:rbk50_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbk50 » Version: N/A
Netgear » Ex6250 Firmware
Versions before (<) 1.0.0.132
cpe:2.3:o:netgear:ex6250_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex6250 » Version: N/A
Netgear » Ex6410 Firmware
Versions before (<) 1.0.0.132
cpe:2.3:o:netgear:ex6410_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex6410 » Version: N/A
Netgear » Ex6420 Firmware
Versions before (<) 1.0.0.132
cpe:2.3:o:netgear:ex6420_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex6420 » Version: N/A
Netgear » Ex7320 Firmware
Versions before (<) 1.0.0.132
cpe:2.3:o:netgear:ex7320_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex7320 » Version: N/A
Netgear » Ex7700 Firmware
Versions before (<) 1.0.0.216
cpe:2.3:o:netgear:ex7700_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Ex7700 » Version: N/A
Netgear » Rbk12 Firmware
Versions before (<) 2.6.1.44
cpe:2.3:o:netgear:rbk12_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbk12 » Version: N/A
Netgear » Rbr10 Firmware
Versions before (<) 2.6.1.44
cpe:2.3:o:netgear:rbr10_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbr10 » Version: N/A
Netgear » Rbs10 Firmware
Versions before (<) 2.6.1.44
cpe:2.3:o:netgear:rbs10_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbs10 » Version: N/A
Netgear » Rbs50y Firmware
Versions before (<) 2.6.1.40
cpe:2.3:o:netgear:rbs50y_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbs50y » Version: N/A
Netgear » Rbr850 Firmware
Versions before (<) 3.2.16.6
cpe:2.3:o:netgear:rbr850_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbr850 » Version: N/A
Netgear » Rbk852 Firmware
Versions before (<) 3.2.16.6
cpe:2.3:o:netgear:rbk852_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbk852 » Version: N/A
Netgear » Rbs850 Firmware
Versions before (<) 3.2.16.6
cpe:2.3:o:netgear:rbs850_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbs850 » Version: N/A
Netgear » Rbs40v Firmware
Versions before (<) 2.6.2.4
cpe:2.3:o:netgear:rbs40v_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbs40v » Version: N/A
Netgear » Rbk752 Firmware
Versions before (<) 3.2.16.6
cpe:2.3:o:netgear:rbk752_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbk752 » Version: N/A
Netgear » Rbr750 Firmware
Versions before (<) 3.2.16.6
cpe:2.3:o:netgear:rbr750_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbr750 » Version: N/A
Netgear » Rbs750 Firmware
Versions before (<) 3.2.16.6
cpe:2.3:o:netgear:rbs750_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Rbs750 » Version: N/A
Netgear » Cbr40 Firmware
Versions before (<) 2.5.0.14
cpe:2.3:o:netgear:cbr40_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Netgear » Cbr40 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2021-38527

EPSS FAQ

0.53%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 77 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-38527

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
10.0	HIGH	AV:N/AC:L/Au:N/C:C/I:C/A:C	10.0	10.0	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
8.1	HIGH	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	2.8	5.2	MITRE
Attack Vector: Adjacent Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: None
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-38527

CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-38527

https://kb.netgear.com/000063778/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Extenders-Routers-and-WiFi-Systems-PSV-2020-0025

Security Advisory for Pre-Authentication Command Injection on Some Extenders, Routers, and WiFi Systems, PSV-2020-0025 | Answer | NETGEAR Support
Vendor Advisory

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Vulnerability Details : CVE-2021-38527

Products affected by CVE-2021-38527

Exploit prediction scoring system (EPSS) score for CVE-2021-38527

CVSS scores for CVE-2021-38527

CWE ids for CVE-2021-38527

References for CVE-2021-38527