CVE-2021-20680
6.1 · MEDIUMOverview
CVE-2021-20680 is a medium-severity vulnerability affecting nec aterm_wg1900hp2_firmware. It was published on April 26, 2021 and has a CVSS 3.1 base score of 6.1 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from nec. Update aterm_wg1900hp2_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| nec | aterm_wg1900hp2_firmware | 0 | Affected |
| nec | aterm_wg1900hp_firmware | 0 | Affected |
| nec | aterm_wg1800hp4_firmware | 0 | Affected |
| nec | aterm_wg1800hp3_firmware | 0 | Affected |
| nec | aterm_wg1200hs3_firmware | 0 | Affected |
| nec | aterm_wg1200hs2_firmware | 0 | Affected |
| nec | aterm_wg1200hp3_firmware | 0 | Affected |
| nec | aterm_wg1200hp2_firmware | 0 | Affected |
| nec | aterm_w1200ex_firmware | 0 | Affected |
| nec | aterm_w1200ex-ms_firmware | 0 | Affected |
Frequently Asked Questions
What is CVE-2021-20680?
CVE-2021-20680 is a medium-severity vulnerability affecting nec aterm_wg1900hp2_firmware. It was published on April 26, 2021 and has a CVSS 3.1 base score of 6.1 (MEDIUM).
How severe is CVE-2021-20680?
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-20680?
Check the references section for vendor advisories and patches from nec. Update aterm_wg1900hp2_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-20680?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-20680 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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