An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices.
Priority MEDIUM 46CWE-798Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-798.
Summary
An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. A hard-coded account allows management-interface login with high privileges. The logged-in user can perform critical tasks and take full control of the device.
Why it matters now
EPSS 0.02187 82nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:dlink:dsl-2640b_firmware:eu_4.01b:*:*:*:*:*:*:* | eu_4.01b | Vulnerable | D-Link Japan K.K. |
| cpe:2.3:h:dlink:dsl-2640b:-:*:*:*:*:*:*:* | not specified by NVD | Running on | D-Link Japan K.K. |
- cpe:2.3:o:dlink:dsl-2640b_firmware:eu_4.01b:*:*:*:*:*:*:* Versions eu_4.01b Vulnerable ·D-Link Japan K.K.
- cpe:2.3:h:dlink:dsl-2640b:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-9279
- 2026-10-03 Alias added: GHSA-w3w2-fx8h-h255
References
More D-Link Japan K.K. Dsl-2640b Firmware vulnerabilities
- TI-2020-07418 An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. CVSS 3.1CRITICAL 9.8
- TI-2020-07416 An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. CVSS 3.1CRITICAL 9.8
- TI-2020-07419 An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. CVSS 3.1CRITICAL 9.1
- TI-2020-07417 An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. CVSS 3.1HIGH 8.8
- TI-2012-01173 Cross-site request forgery (CSRF) vulnerability in redpass.cgi in D-Link DSL-2640B… CVSS 2.0MEDIUM 6.8
Sources
- CVE-2020-9279 · CVE Program
- CVE-2020-9279 · NVD
- FIRST EPSS
- GHSA-w3w2-fx8h-h255 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences