Use of Hard-coded Password in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP, WG1200HP2, W1200EX(-MS), WG1200HS, WG1200HP, WF300HP2, W300P, WF800HP, WR8165N, WG2200HP, WF1200HP2, WG1800HP2, WF1200HP, WG600HP, WG300HP, WF300HP, WG1800HP, WG1400HP, WR8175N, WR9300N, WR8750N, WR8160N, WR9500N, WR8600N, WR8370N, WR8170N, WR8700N, WR8300N, WR8150N, WR4100N, WR4500N, WR8100N, WR8500N, CR2500P, WR8400N, WR8200N, WR1200H, WR7870S, WR6670S, WR7850S, WR6650S, WR6600H, WR7800H, WM3400RN, WM3450RN, WM3500R, WM3600R, WM3800R, WR8166N, MR01LN MR02LN, WG1810HP(JE) and WG1810HP(MF) all versions allows a attacker to execute an arbitrary OS command via the internet.
The manufacturer embedded a fixed, immutable password in the firmware that cannot be changed by the user. An attacker knowing this password can authenticate to the device without any additional privileges (PR:N) and without user interaction (UI:N). After authentication, it is possible to send a crafted request over the internet, resulting in execution of arbitrary operating system commands on the vulnerable device.
The attacker gains full control over the device — it is possible to intercept network traffic, modify configuration, install malicious software, or use the device as an entry point to the internal network (lateral movement). The consequences include breach of confidentiality, integrity, and system availability.
Patches available from the manufacturer should be applied according to the references (https://jpn.nec.com/security-info/secinfo/nv24-001_en.html). Until the update is implemented, it is recommended to block access to the device management panel from the internet (firewall, WAN traffic filtering) and to segment the network to limit potential consequences of compromise.
All firmware versions of the following NEC Corporation Aterm devices: WG1800HP4, WG1200HS3, WG1900HP2, WG1200HP3, WG1800HP3, WG1200HS2, WG1900HP, WG1200HP2, W1200EX(-MS), WG1200HS, WG1200HP, WF300HP2, W300P, WF800HP, WR8165N, WG2200HP, WF1200HP2, WG1800HP2, WF1200HP, WG600HP, WG300HP, WF300HP, WG1800HP, WG1400HP, WR8175N, WR9300N, WR8750N, WR8160N, WR9500N, WR8600N, WR8370N, WR8170N, WR8700N, WR8300N, WR8150N, WR4100N, WR4500N, WR8100N, WR8500N, CR2500P, WR8400N, WR8200N, WR1200H, WR7870S, WR6670S, WR7850S, WR6650S, WR6600H, WR7800H, WM3400RN, WM3450RN, WM3500R, WM3600R, WM3800R, WR8166N, MR01LN, MR02LN, WG1810HP(JE) and WG1810HP(MF) — all versions.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNec Aterm Cr2500p
HWNecall versionsNec Aterm Cr2500p Firmware
OSNecall versionsNec Aterm W1200ex Ms
HWNecall versionsNec Aterm W1200ex Ms Firmware
OSNecall versionsNec Aterm W300p
HWNecall versionsNec Aterm W300p Firmware
OSNecall versionsNec Aterm Wf1200hp
HWNecall versionsNec Aterm Wf1200hp2
HWNecall versionsNec Aterm Wf1200hp2 Firmware
OSNecall versionsNec Aterm Wf1200hp Firmware
OSNecall versionsNec Aterm Wf300hp
HWNecall versionsNec Aterm Wf300hp2
HWNecall versionsNec Aterm Wf300hp2 Firmware
OSNecall versionsNec Aterm Wf300hp Firmware
OSNecall versionsNec Aterm Wf800hp
HWNecall versionsNec Aterm Wf800hp Firmware
OSNecall versionsNec Aterm Wg1200hp
HWNecall versionsNec Aterm Wg1200hp2
HWNecall versionsNec Aterm Wg1200hp2 Firmware
OSNecall versionsNec Aterm Wg1200hp3
HWNecall versionsNec Aterm Wg1200hp3 Firmware
OSNecall versionsNec Aterm Wg1200hp Firmware
OSNecall versionsNec Aterm Wg1200hs
HWNecall versionsNec Aterm Wg1200hs2
HWNecall versionsNec Aterm Wg1200hs2 Firmware
OSNecall versionsNec Aterm Wg1200hs3
HWNecall versionsNec Aterm Wg1200hs3 Firmware
OSNecall versionsNec Aterm Wg1200hs Firmware
OSNecall versionsNec Aterm Wg1400hp
HWNecall versionsNec Aterm Wg1400hp Firmware
OSNecall versions
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