A vulnerability was found in Netgear D6220, D6400, D7000v2, D8500, DGN2200v4, DGN2200Bv4, EX3700, EX3800, EX6000, EX6100, EX6120, EX6130, EX6150, EX6200, EX7000, R6250, R6300v2, R6400, R6400v2, R6700, R6900, R6900P, R7000, R7000P, R7300DST, R7900, R7900P, R8000, R8000P, R8300, R8500, WN2500RPv2, WNDR3400v3 and WNR3500Lv2 (Wireless LAN Software). It has been classified as critical. This affects some unknown functionality. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.38, D6400 before 1.0.0.74, D7000v2 before 1.0.0.74, D8500 before 1.0.3.39, DGN2200v4 before 1.0.0.102, DGN2200Bv4 before 1.0.0.102, EX3700 before 1.0.0.70, EX3800 before 1.0.0.70, EX6000 before 1.0.0.30, EX6100 before 1.0.2.22, EX6120 before 1.0.0.40, EX6130 before 1.0.0.22, EX6150 before 1.0.0.38, EX6200 before 1.0.3.86, EX7000 before 1.0.0.64, R6250 before 1.0.4.20, R6300v2 before 1.0.4.22, R6400 before 1.0.1.32, R6400v2 before 1.0.2.52, R6700 before 1.0.1.44, R6900 before 1.0.1.44, R6900P before 1.3.0.18, R7000 before 1.0.9.28, R7000P before 1.3.0.18, R7300DST before 1.0.0.62, R7900 before 1.0.2.10, R7900P before 1.3.0.10, R8000 before 1.0.4.12, R8000P before 1.3.0.10, R8300 before 1.0.2.116, R8500 before 1.0.2.116, WN2500RPv2 before 1.0.1.52, WNDR3400v3 before 1.0.1.18, and WNR3500Lv2 before 1.2.0.46.

The weakness was released 04/27/2020 (Website). The advisory is shared at kb.netgear.com. This vulnerability is uniquely identified as CVE-2018-21156 since 04/20/2020. The attack can only be initiated within the local network. A authentication is required for exploitation. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

Productinfo

Type

• Wireless LAN Software

Vendor

• Netgear

Name

• D6220
• D6400
• D7000v2
• D8500
• DGN2200Bv4
• DGN2200v4
• EX3700
• EX3800
• EX6000
• EX6100
• EX6120
• EX6130
• EX6150
• EX6200
• EX7000
• R6250
• R6300v2
• R6400
• R6400v2
• R6700
• R6900
• R6900P
• R7000
• R7000P
• R7300DST
• R7900
• R7900P
• R8000
• R8000P
• R8300
• R8500
• WN2500RPv2
• WNDR3400v3
• WNR3500Lv2

License

• commercial

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Discussion