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CVE-2021-34982 Details

Description

NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. When parsing the strings file, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-13709.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159	CVE	Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1274/	CVE	Third Party Advisory
https://kb.netgear.com/000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159	[email protected]	Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1274/	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-787	Out-of-bounds Write	[email protected]
CWE-121	Stack-based Buffer Overflow	[email protected]

Affected Products

Product	Versions
netgear dc112a firmware	< 1.0.0.62
CPE cpe:2.3:o:netgear:dc112a_firmware:::::::: Remediation No remediation found in references.
netgear dc112a	All versions
CPE cpe:2.3:h:netgear:dc112a:-:::::::* Remediation No remediation found in references.
netgear ex3700 firmware	< 1.0.0.94
CPE cpe:2.3:o:netgear:ex3700_firmware:::::::: Remediation No remediation found in references.
netgear ex3700	All versions
CPE cpe:2.3:h:netgear:ex3700:-:::::::* Remediation No remediation found in references.
netgear ex3800 firmware	< 1.0.0.94
CPE cpe:2.3:o:netgear:ex3800_firmware:::::::: Remediation No remediation found in references.
netgear ex3800	All versions
CPE cpe:2.3:h:netgear:ex3800:-:::::::* Remediation No remediation found in references.
netgear ex6120 firmware	< 1.0.0.66
CPE cpe:2.3:o:netgear:ex6120_firmware:::::::: Remediation No remediation found in references.
netgear ex6120	All versions
CPE cpe:2.3:h:netgear:ex6120:-:::::::* Remediation No remediation found in references.
netgear ex6130 firmware	< 1.0.0.46
CPE cpe:2.3:o:netgear:ex6130_firmware:::::::: Remediation No remediation found in references.
netgear ex6130	All versions
CPE cpe:2.3:h:netgear:ex6130:-:::::::* Remediation No remediation found in references.
netgear ex7000 firmware	< 1.0.1.106
CPE cpe:2.3:o:netgear:ex7000_firmware:::::::: Remediation No remediation found in references.
netgear ex7000	All versions
CPE cpe:2.3:h:netgear:ex7000:-:::::::* Remediation No remediation found in references.
netgear ex7500 firmware	< 1.0.1.76
CPE cpe:2.3:o:netgear:ex7500_firmware:::::::: Remediation No remediation found in references.
netgear ex7500	All versions
CPE cpe:2.3:h:netgear:ex7500:-:::::::* Remediation No remediation found in references.
netgear mr60 firmware	< 1.1.6.122
CPE cpe:2.3:o:netgear:mr60_firmware:::::::: Remediation No remediation found in references.
netgear mr60	All versions
CPE cpe:2.3:h:netgear:mr60:-:::::::* Remediation No remediation found in references.
netgear mr80 firmware	< 1.1.6.10
CPE cpe:2.3:o:netgear:mr80_firmware:::::::: Remediation No remediation found in references.
netgear mr80	All versions
CPE cpe:2.3:h:netgear:mr80:-:::::::* Remediation No remediation found in references.
netgear ms60 firmware	< 1.1.6.122
CPE cpe:2.3:o:netgear:ms60_firmware:::::::: Remediation No remediation found in references.
netgear ms60	All versions
CPE cpe:2.3:h:netgear:ms60:-:::::::* Remediation No remediation found in references.
netgear ms80 firmware	< 1.1.6.10
CPE cpe:2.3:o:netgear:ms80_firmware:::::::: Remediation No remediation found in references.
netgear ms80	All versions
CPE cpe:2.3:h:netgear:ms80:-:::::::* Remediation No remediation found in references.
netgear lax20 firmware	< 1.1.6.30
CPE cpe:2.3:o:netgear:lax20_firmware:::::::: Remediation No remediation found in references.
netgear lax20	All versions
CPE cpe:2.3:h:netgear:lax20:-:::::::* Remediation No remediation found in references.
netgear r6400 firmware	< 1.0.1.76
CPE cpe:2.3:o:netgear:r6400_firmware:::::::: Remediation No remediation found in references.
netgear r6400	All versions
CPE cpe:2.3:h:netgear:r6400:-:::::::* Remediation No remediation found in references.
netgear r6400v2 firmware	< 1.0.4.120
CPE cpe:2.3:o:netgear:r6400v2_firmware:::::::: Remediation No remediation found in references.
netgear r6400v2	All versions
CPE cpe:2.3:h:netgear:r6400v2:-:::::::* Remediation No remediation found in references.
netgear r6700v3 firmware	< 1.0.4.120
CPE cpe:2.3:o:netgear:r6700v3_firmware:::::::: Remediation No remediation found in references.
netgear r6700v3	All versions
CPE cpe:2.3:h:netgear:r6700v3:-:::::::* Remediation No remediation found in references.
netgear r6900p firmware	< 1.3.3.148
CPE cpe:2.3:o:netgear:r6900p_firmware:::::::: Remediation No remediation found in references.
netgear r6900p	All versions
CPE cpe:2.3:h:netgear:r6900p:-:::::::* Remediation No remediation found in references.
netgear r7000 firmware	< 1.0.11.128
CPE cpe:2.3:o:netgear:r7000_firmware:::::::: Remediation No remediation found in references.
netgear r7000	All versions
CPE cpe:2.3:h:netgear:r7000:-:::::::* Remediation No remediation found in references.
netgear r7000p firmware	< 1.3.3.148
CPE cpe:2.3:o:netgear:r7000p_firmware:::::::: Remediation No remediation found in references.
netgear r7000p	All versions
CPE cpe:2.3:h:netgear:r7000p:-:::::::* Remediation No remediation found in references.
netgear r7100lg firmware	< 1.0.0.72
CPE cpe:2.3:o:netgear:r7100lg_firmware:::::::: Remediation No remediation found in references.
netgear r7100lg	All versions
CPE cpe:2.3:h:netgear:r7100lg:-:::::::* Remediation No remediation found in references.
netgear r7850 firmware	< 1.0.5.76
CPE cpe:2.3:o:netgear:r7850_firmware:::::::: Remediation No remediation found in references.
netgear r7850	All versions
CPE cpe:2.3:h:netgear:r7850:-:::::::* Remediation No remediation found in references.
netgear r7900p firmware	< 1.4.2.84
CPE cpe:2.3:o:netgear:r7900p_firmware:::::::: Remediation No remediation found in references.
netgear r7900p	All versions
CPE cpe:2.3:h:netgear:r7900p:-:::::::* Remediation No remediation found in references.
netgear r7960p firmware	< 1.4.2.84
CPE cpe:2.3:o:netgear:r7960p_firmware:::::::: Remediation No remediation found in references.
netgear r7960p	All versions
CPE cpe:2.3:h:netgear:r7960p:-:::::::* Remediation No remediation found in references.
netgear r8000 firmware	< 1.0.4.76
CPE cpe:2.3:o:netgear:r8000_firmware:::::::: Remediation No remediation found in references.
netgear r8000	All versions
CPE cpe:2.3:h:netgear:r8000:-:::::::* Remediation No remediation found in references.
netgear r8000p firmware	< 1.4.2.84
CPE cpe:2.3:o:netgear:r8000p_firmware:::::::: Remediation No remediation found in references.
netgear r8000p	All versions
CPE cpe:2.3:h:netgear:r8000p:-:::::::* Remediation No remediation found in references.
netgear r8300 firmware	< 1.0.2.156
CPE cpe:2.3:o:netgear:r8300_firmware:::::::: Remediation No remediation found in references.
netgear r8300	All versions
CPE cpe:2.3:h:netgear:r8300:-:::::::* Remediation No remediation found in references.
netgear r8500 firmware	< 1.0.2.156
CPE cpe:2.3:o:netgear:r8500_firmware:::::::: Remediation No remediation found in references.
netgear r8500	All versions
CPE cpe:2.3:h:netgear:r8500:-:::::::* Remediation No remediation found in references.
netgear rax15 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax15_firmware:::::::: Remediation No remediation found in references.
netgear rax15	All versions
CPE cpe:2.3:h:netgear:rax15:-:::::::* Remediation No remediation found in references.
netgear rax20 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax20_firmware:::::::: Remediation No remediation found in references.
netgear rax20	All versions
CPE cpe:2.3:h:netgear:rax20:-:::::::* Remediation No remediation found in references.
netgear rax200 firmware	< 1.0.5.132
CPE cpe:2.3:o:netgear:rax200_firmware:::::::: Remediation No remediation found in references.
netgear rax200	All versions
CPE cpe:2.3:h:netgear:rax200:-:::::::* Remediation No remediation found in references.
netgear rax35v2 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax35v2_firmware:::::::: Remediation No remediation found in references.
netgear rax35v2	All versions
CPE cpe:2.3:h:netgear:rax35v2:-:::::::* Remediation No remediation found in references.
netgear rax38v2 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax38v2_firmware:::::::: Remediation No remediation found in references.
netgear rax38v2	All versions
CPE cpe:2.3:h:netgear:rax38v2:-:::::::* Remediation No remediation found in references.
netgear rax40v2 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax40v2_firmware:::::::: Remediation No remediation found in references.
netgear rax40v2	All versions
CPE cpe:2.3:h:netgear:rax40v2:-:::::::* Remediation No remediation found in references.
netgear rax42 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax42_firmware:::::::: Remediation No remediation found in references.
netgear rax42	All versions
CPE cpe:2.3:h:netgear:rax42:-:::::::* Remediation No remediation found in references.
netgear rax43 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax43_firmware:::::::: Remediation No remediation found in references.
netgear rax43	All versions
CPE cpe:2.3:h:netgear:rax43:-:::::::* Remediation No remediation found in references.
netgear rax45 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax45_firmware:::::::: Remediation No remediation found in references.
netgear rax45	All versions
CPE cpe:2.3:h:netgear:rax45:-:::::::* Remediation No remediation found in references.
netgear rax48 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax48_firmware:::::::: Remediation No remediation found in references.
netgear rax48	All versions
CPE cpe:2.3:h:netgear:rax48:-:::::::* Remediation No remediation found in references.
netgear rax50 firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax50_firmware:::::::: Remediation No remediation found in references.
netgear rax50	All versions
CPE cpe:2.3:h:netgear:rax50:-:::::::* Remediation No remediation found in references.
netgear rax50s firmware	< 1.0.4.100
CPE cpe:2.3:o:netgear:rax50s_firmware:::::::: Remediation No remediation found in references.
netgear rax50s	All versions
CPE cpe:2.3:h:netgear:rax50s:-:::::::* Remediation No remediation found in references.
netgear rax75 firmware	< 1.0.5.132
CPE cpe:2.3:o:netgear:rax75_firmware:::::::: Remediation No remediation found in references.
netgear rax75	All versions
CPE cpe:2.3:h:netgear:rax75:-:::::::* Remediation No remediation found in references.
netgear rax80 firmware	< 1.0.5.132
CPE cpe:2.3:o:netgear:rax80_firmware:::::::: Remediation No remediation found in references.
netgear rax80	All versions
CPE cpe:2.3:h:netgear:rax80:-:::::::* Remediation No remediation found in references.
netgear raxe450 firmware	< 1.0.8.70
CPE cpe:2.3:o:netgear:raxe450_firmware:::::::: Remediation No remediation found in references.
netgear raxe450	All versions
CPE cpe:2.3:h:netgear:raxe450:-:::::::* Remediation No remediation found in references.
netgear raxe500 firmware	< 1.0.8.70
CPE cpe:2.3:o:netgear:raxe500_firmware:::::::: Remediation No remediation found in references.
netgear raxe500	All versions
CPE cpe:2.3:h:netgear:raxe500:-:::::::* Remediation No remediation found in references.
netgear rs400 firmware	< 1.5.1.80
CPE cpe:2.3:o:netgear:rs400_firmware:::::::: Remediation No remediation found in references.
netgear rs400	All versions
CPE cpe:2.3:h:netgear:rs400:-:::::::* Remediation No remediation found in references.
netgear wndr3400v3 firmware	< 1.0.1.42
CPE cpe:2.3:o:netgear:wndr3400v3_firmware:::::::: Remediation No remediation found in references.
netgear wndr3400v3	All versions
CPE cpe:2.3:h:netgear:wndr3400v3:-:::::::* Remediation No remediation found in references.
netgear wnr3500lv2 firmware	< 1.2.0.70
CPE cpe:2.3:o:netgear:wnr3500lv2_firmware:::::::: Remediation No remediation found in references.
netgear wnr3500lv2	All versions
CPE cpe:2.3:h:netgear:wnr3500lv2:-:::::::* Remediation No remediation found in references.
netgear xr1000 firmware	< 1.0.0.64
CPE cpe:2.3:o:netgear:xr1000_firmware:::::::: Remediation No remediation found in references.
netgear xr1000	All versions
CPE cpe:2.3:h:netgear:xr1000:-:::::::* Remediation No remediation found in references.
netgear xr300 firmware	< 1.0.3.68
CPE cpe:2.3:o:netgear:xr300_firmware:::::::: Remediation No remediation found in references.
netgear xr300	All versions
CPE cpe:2.3:h:netgear:xr300:-:::::::* Remediation No remediation found in references.
netgear d6220 firmware	< 1.0.0.76
CPE cpe:2.3:o:netgear:d6220_firmware:::::::: Remediation No remediation found in references.
netgear d6220	All versions
CPE cpe:2.3:h:netgear:d6220:-:::::::* Remediation No remediation found in references.
netgear d6400 firmware	< 1.0.0.108
CPE cpe:2.3:o:netgear:d6400_firmware:::::::: Remediation No remediation found in references.
netgear d6400	All versions
CPE cpe:2.3:h:netgear:d6400:-:::::::* Remediation No remediation found in references.
netgear d7000v2 firmware	< 1.0.0.76
CPE cpe:2.3:o:netgear:d7000v2_firmware:::::::: Remediation No remediation found in references.
netgear d7000v2	All versions
CPE cpe:2.3:h:netgear:d7000v2:-:::::::* Remediation No remediation found in references.
netgear dgn2200v4 firmware	< 1.0.0.126
CPE cpe:2.3:o:netgear:dgn2200v4_firmware:::::::: Remediation No remediation found in references.
netgear dgn2200v4	All versions
CPE cpe:2.3:h:netgear:dgn2200v4:-:::::::* Remediation No remediation found in references.
netgear v6510-1fxaus firmware	< 1.0.0.80
CPE cpe:2.3:o:netgear:v6510-1fxaus_firmware:::::::: Remediation No remediation found in references.
netgear v6510-1fxaus	All versions
CPE cpe:2.3:h:netgear:v6510-1fxaus:-:::::::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Aug 14, 2025	Initial Analysis	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
May 7, 2024	New CVE Received	[email protected]

CVE-2021-34982 Details

Description

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