Cross-site scripting in NEC Aterm devices
Priority LOW 29CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
EPSS 0.00796 56th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| NEC Corporation | 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 | — | No fix listed | CNA |
- NEC Aterm devices VendorNEC Corporation Affected 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 Fixed in — No fix listed CNA
CPE configurations NVD · 34
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:nec:aterm_wg1900hp2_firmware:*:*:*:*:*:*:*:* | up to 1.3.1 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1900hp2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg1900hp_firmware:*:*:*:*:*:*:*:* | up to 2.5.1 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1900hp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg1800hp4_firmware:*:*:*:*:*:*:*:* | up to 1.3.1 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1800hp4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg1800hp3_firmware:*:*:*:*:*:*:*:* | up to 1.5.1 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1800hp3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg1200hs3_firmware:*:*:*:*:*:*:*:* | up to 1.1.2 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1200hs3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
- cpe:2.3:o:nec:aterm_wg1900hp2_firmware:*:*:*:*:*:*:*:* Versions up to 1.3.1 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1900hp2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg1900hp_firmware:*:*:*:*:*:*:*:* Versions up to 2.5.1 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1900hp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg1800hp4_firmware:*:*:*:*:*:*:*:* Versions up to 1.3.1 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1800hp4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg1800hp3_firmware:*:*:*:*:*:*:*:* Versions up to 1.5.1 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1800hp3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg1200hs3_firmware:*:*:*:*:*:*:*:* Versions up to 1.1.2 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1200hs3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
Show 24 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:nec:aterm_wg1200hs2_firmware:*:*:*:*:*:*:*:* | up to 2.5.0 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1200hs2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg1200hp3_firmware:*:*:*:*:*:*:*:* | up to 1.3.1 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1200hp3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg1200hp2_firmware:*:*:*:*:*:*:*:* | up to 2.5.0 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1200hp2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_w1200ex_firmware:*:*:*:*:*:*:*:* | up to 1.3.1 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_w1200ex:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_w1200ex-ms_firmware:*:*:*:*:*:*:*:* | up to 1.3.1 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_w1200ex-ms:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg1200hs_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1200hs:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg1200hp_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1200hp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wf800hp_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wf800hp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wf300hp2_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wf300hp2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wr8165n_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wr8165n:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_w500p_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_w500p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_w300p_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_w300p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
- cpe:2.3:o:nec:aterm_wg1200hs2_firmware:*:*:*:*:*:*:*:* Versions up to 2.5.0 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1200hs2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg1200hp3_firmware:*:*:*:*:*:*:*:* Versions up to 1.3.1 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1200hp3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg1200hp2_firmware:*:*:*:*:*:*:*:* Versions up to 2.5.0 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1200hp2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_w1200ex_firmware:*:*:*:*:*:*:*:* Versions up to 1.3.1 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_w1200ex:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_w1200ex-ms_firmware:*:*:*:*:*:*:*:* Versions up to 1.3.1 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_w1200ex-ms:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg1200hs_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1200hs:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg1200hp_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1200hp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wf800hp_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wf800hp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wf300hp2_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wf300hp2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wr8165n_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wr8165n:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_w500p_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_w500p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_w300p_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_w300p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20680
- 2026-10-03 Alias added: GHSA-qrw9-9x9v-8v9p
References
More NEC Corporation Aterm W1200ex-ms Firmware vulnerabilities
- TI-2024-18613 Improper authentication in NEC Corporation WG1800HP4 CVSS 3.1CRITICAL 9.8
- TI-2024-18612 Hidden Functionality vulnerability in NEC Corporation Aterm WG1800HP4, WG1200HS3… CVSS 3.1CRITICAL 9.8
- TI-2024-18610 Improper authentication in NEC Corporation WG1800HP4 CVSS 3.1CRITICAL 9.8
- TI-2024-18616 OS command injection in NEC Corporation WG1800HP4 CVSS 3.1CRITICAL 9.8
- TI-2024-18615 Stack-based buffer overflow in NEC Corporation WG1800HP4 CVSS 3.1CRITICAL 9.8
- TI-2024-18611 Use of Hard-coded Password in NEC Corporation Aterm WG1800HP4, WG1200HS3, WG1900HP2… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-20680 · CVE Program
- CVE-2021-20680 · NVD
- FIRST EPSS
- GHSA-qrw9-9x9v-8v9p · GitHub Advisory Database · CC BY 4.0
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