A stack-based buffer overflow was found on the D-Link DIR-842 REVC with firmware v3.13B09…
Priority MEDIUM 46CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- 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-787 and the CVSS impact.
Summary
A stack-based buffer overflow was found on the D-Link DIR-842 REVC with firmware v3.13B09 HOTFIX due to the use of strcpy for LOGINPASSWORD when handling a POST request to the /MTFWU endpoint.
Why it matters now
EPSS 0.01797 78th 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:dir-842_firmware:3.13b09:*:*:*:*:*:*:* | 3.13b09 | Vulnerable | D-Link Japan K.K. |
| cpe:2.3:h:dlink:dir-842:c:*:*:*:*:*:*:* | c | Running on | D-Link Japan K.K. |
- cpe:2.3:o:dlink:dir-842_firmware:3.13b09:*:*:*:*:*:*:* Versions 3.13b09 Vulnerable ·D-Link Japan K.K.
- cpe:2.3:h:dlink:dir-842:c:*:*:*:*:*:*:* Versions c 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-2020-8962
- 2026-10-03 Alias added: GHSA-jjgf-8279-h8cq
References
More D-Link Japan K.K. Dir-842 Firmware vulnerabilities
- TI-2024-00658 D-Link Good Line Router v2 HTTP GET Request devinfo information disclosure CVSS 3.1MEDIUM 5.3
- TI-2023-20730 D-Link DIR-842 fw_revA_1-02_eu_multi_20151008 was discovered to contain multiple buffer… CVSS 3.1CRITICAL 9.8
- TI-2020-12307 This vulnerability allows network-adjacent attackers to bypass authentication on affected… CVSS 3.1HIGH 8.8
Sources
- CVE-2020-8962 · CVE Program
- CVE-2020-8962 · NVD
- FIRST EPSS
- GHSA-jjgf-8279-h8cq · 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