Improper validation of integrity check value vulnerability in NEC Aterm WF1200CR firmware…
Priority LOW 33CWE-354Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Improper validation of integrity check value vulnerability in NEC Aterm WF1200CR firmware Ver1.3.2 and earlier, Aterm WG1200CR firmware Ver1.3.3 and earlier, and Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker with an administrative privilege to execute arbitrary OS commands by sending a specially crafted request to a specific URL.
Why it matters now
EPSS 0.0066 51st 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 WF1200CR firmware Ver1.3.2 and earlier, Aterm WG1200CR firmware Ver1.3.3 and earlier, and Aterm WG2600HS firmware Ver1.5.1 and earlier | — | No fix listed | CNA |
- NEC Aterm devices VendorNEC Corporation Affected Aterm WF1200CR firmware Ver1.3.2 and earlier, Aterm WG1200CR firmware Ver1.3.3 and earlier, and Aterm WG2600HS firmware Ver1.5.1 and earlier Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:nec:aterm_wf1200cr_firmware:*:*:*:*:*:*:*:* | up to 1.3.2 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wf1200cr:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg1200cr_firmware:*:*:*:*:*:*:*:* | up to 1.3.3 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg1200cr:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
| cpe:2.3:o:nec:aterm_wg2600hs_firmware:*:*:*:*:*:*:*:* | up to 1.5.1 | Vulnerable | NEC Corporation |
| cpe:2.3:h:nec:aterm_wg2600hs:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NEC Corporation |
- cpe:2.3:o:nec:aterm_wf1200cr_firmware:*:*:*:*:*:*:*:* Versions up to 1.3.2 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wf1200cr:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg1200cr_firmware:*:*:*:*:*:*:*:* Versions up to 1.3.3 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg1200cr:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NEC Corporation
- cpe:2.3:o:nec:aterm_wg2600hs_firmware:*:*:*:*:*:*:*:* Versions up to 1.5.1 Vulnerable ·NEC Corporation
- cpe:2.3:h:nec:aterm_wg2600hs:-:*:*:*:*:*:*:* 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-2021-20709
- 2026-10-03 Alias added: GHSA-fr48-wfw6-fwg7
- 2026-10-07 EPSS moved to the 50th–90th percentile
References
More NEC Corporation Aterm Wf1200cr Firmware vulnerabilities
- TI-2018-11592 OS command injection in NEC Corporation Aterm WF1200CR and Aterm WG1200CR CVSS 3.0HIGH 8.8
- TI-2026-04024 OS command injection in NEC Platforms, Ltd. Aterm WG2600HS CVSS 4.0HIGH 7.1
- TI-2021-03934 OS command injection in NEC Aterm devices CVSS 3.1HIGH 7.2
- TI-2018-11591 OS command injection in NEC Corporation Aterm WF1200CR and Aterm WG1200CR CVSS 3.0HIGH 7.2
- TI-2018-11589 Information disclosure in NEC Corporation Aterm WF1200CR and Aterm WG1200CR CVSS 3.0MEDIUM 6.5
- TI-2026-04023 Hidden Functionality vulnerability in NEC Platforms, Ltd. CVSS 4.0MEDIUM 6.3
Sources
- CVE-2021-20709 · CVE Program
- CVE-2021-20709 · NVD
- FIRST EPSS
- GHSA-fr48-wfw6-fwg7 · GitHub Advisory Database · CC BY 4.0
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