Critical severity · published Dec 26, 2021
CVE-2021-45527
Certain NETGEAR devices are affected by a buffer overflow by an authenticated user
9.8
CVSS
1.2%
EPSS
No
On KEV
Description
Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.68, D6400 before 1.0.0.102, D7000v2 before 1.0.0.66, D8500 before 1.0.3.58, DC112A before 1.0.0.54, EX7000 before 1.0.1.94, EX7500 before 1.0.0.72, R6250 before 1.0.4.48, R6300v2 before 1.0.4.52, R6400 before 1.0.1.70, R6400v2 before 1.0.4.102, R6700v3 before 1.0.4.102, R7000 before 1.0.11.116, R7100LG before 1.0.0.64, R7850 before 1.0.5.68, R7900 before 1.0.4.30, R7960P before 1.4.1.68, R8000 before 1.0.4.52, RAX200 before 1.0.2.88, RBS40V before 2.6.2.4, RS400 before 1.5.1.80, XR300 before 1.0.3.56, R7000P before 1.3.2.124, R8000P before 1.4.1.68, R8500 before 1.0.2.144, RAX80 before 1.0.3.102, R6900P before 1.3.2.124, R7900P before 1.4.1.68, R8300 before 1.0.2.144, RAX75 before 1.0.3.102, RBR750 before 3.2.17.12, RBR850 before 3.2.17.12, RBS750 before 3.2.17.12, RBS850 before 3.2.17.12, RBK752 before 3.2.17.12, and RBK852 before 3.2.17.12.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DF
D6220 Firmware · Netgear
before 1.0.0.68 · source: NVD
DF
D6400 Firmware · Netgear
before 1.0.0.102 · source: NVD
DF
D7000v2 Firmware · Netgear
before 1.0.0.66 · source: NVD
DF
D8500 Firmware · Netgear
before 1.0.3.58 · source: NVD
DF
Dc112a Firmware · Netgear
before 1.0.0.54 · source: NVD
EF
Ex7000 Firmware · Netgear
before 1.0.1.94 · source: NVD
EF
Ex7500 Firmware · Netgear
before 1.0.0.72 · source: NVD
RF
R6250 Firmware · Netgear
before 1.0.4.48 · source: NVD
RF
R6300v2 Firmware · Netgear
before 1.0.4.52 · source: NVD
RF
R6400 Firmware · Netgear
before 1.0.1.70 · source: NVD
RF
R6400v2 Firmware · Netgear
before 1.0.4.102 · source: NVD
RF
R6700v3 Firmware · Netgear
before 1.0.4.102 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45527
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-45527
Patch
https://kb.netgear.com/000064493/Security-Advisory-for-Post-Authentication-Buffer-Overflow-on-Some-Routers-Extenders-and-WiFi-Systems-PSV-2020-0437
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