Vulnerability Monitor

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CVE-2021-20680


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.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.1, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 34 products from nec, from nec, from nec and 31 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2021-04-26T01:15:07.770

Last Modified

2024-11-21T05:46:59.873

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.1 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-79

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System nec aterm_wg1900hp2_firmware ≤ 1.3.1 Yes
Hardware nec aterm_wg1900hp2 - No
Operating System nec aterm_wg1900hp_firmware ≤ 2.5.1 Yes
Hardware nec aterm_wg1900hp - No
Operating System nec aterm_wg1800hp4_firmware ≤ 1.3.1 Yes
Hardware nec aterm_wg1800hp4 - No
Operating System nec aterm_wg1800hp3_firmware ≤ 1.5.1 Yes
Hardware nec aterm_wg1800hp3 - No
Operating System nec aterm_wg1200hs3_firmware ≤ 1.1.2 Yes
Hardware nec aterm_wg1200hs3 - No
Operating System nec aterm_wg1200hs2_firmware ≤ 2.5.0 Yes
Hardware nec aterm_wg1200hs2 - No
Operating System nec aterm_wg1200hp3_firmware ≤ 1.3.1 Yes
Hardware nec aterm_wg1200hp3 - No
Operating System nec aterm_wg1200hp2_firmware ≤ 2.5.0 Yes
Hardware nec aterm_wg1200hp2 - No
Operating System nec aterm_w1200ex_firmware ≤ 1.3.1 Yes
Hardware nec aterm_w1200ex - No
Operating System nec aterm_w1200ex-ms_firmware ≤ 1.3.1 Yes
Hardware nec aterm_w1200ex-ms - No
Operating System nec aterm_wg1200hs_firmware * Yes
Hardware nec aterm_wg1200hs - No
Operating System nec aterm_wg1200hp_firmware * Yes
Hardware nec aterm_wg1200hp - No
Operating System nec aterm_wf800hp_firmware * Yes
Hardware nec aterm_wf800hp - No
Operating System nec aterm_wf300hp2_firmware * Yes
Hardware nec aterm_wf300hp2 - No
Operating System nec aterm_wr8165n_firmware * Yes
Hardware nec aterm_wr8165n - No
Operating System nec aterm_w500p_firmware * Yes
Hardware nec aterm_w500p - No
Operating System nec aterm_w300p_firmware * Yes
Hardware nec aterm_w300p - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For nec's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.