CVE-2021-20680

MEDIUM
6.1
CVSS Score
Published: April 26, 2021 at 12:20 AM UTC
Updated: June 17, 2026 at 03:34 AM UTC
34 products affected across 1 vendorAterm W300P FirmwareAterm WG1200HP FirmwareAterm WG1200HP2 Firmware

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.8%

Description

Cross-site scripting vulnerability in NEC Aterm devices (Aterm WG1900HP2 firmware Ver.1.3.1 and earlier, Aterm WG1900HP firmware Ver.2.5.1 and earlier, Aterm WG1800HP4 firmware Ver.1.3.1 and earlier, Aterm WG1800HP3 firmware Ver.1.5.1 and earlier, Aterm WG1200HS2 firmware Ver.2.5.0 and earlier, Aterm WG1200HP3 firmware Ver.1.3.1 and earlier, Aterm WG1200HP2 firmware Ver.2.5.0 and earlier, Aterm W1200EX firmware Ver.1.3.1 and earlier, Aterm W1200EX-MS firmware Ver.1.3.1 and earlier, Aterm WG1200HS firmware all versions Aterm WG1200HP firmware all versions Aterm WF800HP firmware all versions Aterm WF300HP2 firmware all versions Aterm WR8165N firmware all versions Aterm W500P firmware all versions, and Aterm W300P firmware all versions) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.3.1
nec-aterm-w1200ex (same device)
v ≤ 1.3.1
nec-aterm-w1200ex-ms (same device)
All versions
nec-aterm-w300p (same device)
All versions
nec-aterm-w500p (same device)
All versions
nec-aterm-wf300hp2 (same device)
All versions
nec-aterm-wf800hp (same device)
All versions
nec-aterm-wg1200hp (same device)
v ≤ 2.5.0
nec-aterm-wg1200hp2 (same device)
v ≤ 1.3.1
nec-aterm-wg1200hp3 (same device)
All versions
nec-aterm-wg1200hs (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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