High severity · published May 7, 2024
CVE-2021-34982
NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability
8.8
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DF
D6220 Firmware · Netgear
before 1.0.0.76 · source: NVD
DF
D6400 Firmware · Netgear
before 1.0.0.108 · source: NVD
DF
D7000v2 Firmware · Netgear
before 1.0.0.76 · source: NVD
DF
Dc112a Firmware · Netgear
before 1.0.0.62 · source: NVD
DF
Dgn2200v4 Firmware · Netgear
before 1.0.0.126 · source: NVD
EF
Ex3700 Firmware · Netgear
before 1.0.0.94 · source: NVD
EF
Ex3800 Firmware · Netgear
before 1.0.0.94 · source: NVD
EF
Ex6120 Firmware · Netgear
before 1.0.0.66 · source: NVD
EF
Ex6130 Firmware · Netgear
before 1.0.0.46 · source: NVD
EF
Ex7000 Firmware · Netgear
before 1.0.1.106 · source: NVD
EF
Ex7500 Firmware · Netgear
before 1.0.1.76 · source: NVD
LF
Lax20 Firmware · Netgear
before 1.1.6.30 · source: NVD
Affected product
DF
D6220 Firmware
Netgear
More from D6220 Firmware
8.8
CVE-2016-6277
NETGEAR Multiple Routers Remote Code Execution Vulnerability
8.1
CVE-2017-5521
NETGEAR Multiple Devices Exposure of Sensitive Information Vulnerability
9.8
CVE-2021-45638
Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker
9.8
CVE-2021-45610
Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker
9.8
CVE-2021-45527
Certain NETGEAR devices are affected by a buffer overflow by an authenticated user