Netgear DC112A httpd stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Netgear DC112A, EX3700, EX3800, EX6120, EX6130, EX7000, EX7500, MR60, MR80, MS60, MS80, LAX20, R6400, R6400v2, R6700v3, R6900P, R7000, R7000P, R7100LG, R7850, R7900P, R7960P, R8000, R8000P, R8300, R8500, RAX15, RAX20, RAX200, RAX35v2, RAX38v2, RAX40v2, RAX42, RAX43, RAX45, RAX48, RAX50, RAX50S, RAX75, RAX80, RAXE450, RAXE500, RS400, WNDR3400v3, WNR3500Lv2, XR1000, XR300, D6220, D6400, D7000v2, DGN2200v4 and V6510-1FXAUS and classified as critical. This impacts an unknown function of the component httpd. Executing a manipulation can lead to stack-based overflow. This vulnerability is registered as CVE-2021-34982. The attack requires access to the local network. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Netgear DC112A, EX3700, EX3800, EX6120, EX6130, EX7000, EX7500, MR60, MR80, MS60, MS80, LAX20, R6400, R6400v2, R6700v3, R6900P, R7000, R7000P, R7100LG, R7850, R7900P, R7960P, R8000, R8000P, R8300, R8500, RAX15, RAX20, RAX200, RAX35v2, RAX38v2, RAX40v2, RAX42, RAX43, RAX45, RAX48, RAX50, RAX50S, RAX75, RAX80, RAXE450, RAXE500, RS400, WNDR3400v3, WNR3500Lv2, XR1000, XR300, D6220, D6400, D7000v2, DGN2200v4 and V6510-1FXAUS and classified as critical. This vulnerability affects an unknown code of the component httpd. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at zerodayinitiative.com. This vulnerability was named CVE-2021-34982 since 06/17/2021. The exploitation appears to be easy. The attack needs to be initiated within the local network. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/14/2025).

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (Zero Day Initiative): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/17/2021 🔍
05/07/2024 +1055 days 🔍
05/08/2024 +0 days 🔍
08/14/2025 +463 days 🔍

Sourcesinfo

Vendor: netgear.com

Advisory: ZDI-21-1274
Status: Confirmed

CVE: CVE-2021-34982 (🔍)
GCVE (CVE): GCVE-0-2021-34982
GCVE (VulDB): GCVE-100-263470

Entryinfo

Created: 05/08/2024 01:44
Updated: 08/14/2025 03:59
Changes: 05/08/2024 01:44 (64), 08/14/2025 03:59 (2)
Complete: 🔍
Cache ID: 216::103

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