What’s Vulnerable › Vulnerabilities

CVE-2021-45382: D-Link Multiple Routers Remote Code Execution Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-04-04
• EPSS: 97.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-17 · updated 2026-06-17
• Weakness: CWE-78

Description

A Remote Command Execution (RCE) vulnerability exists in all series H/W revisions D-link DIR-810L, DIR-820L/LW, DIR-826L, DIR-830L, and DIR-836L routers via the DDNS function in ncc2 binary file. Note: DIR-810L, DIR-820L, DIR-830L, DIR-826L, DIR-836L, all hardware revisions, have reached their End of Life ("EOL") /End of Service Life ("EOS") Life-Cycle and as such this issue will not be patched.

Affected products

• Dlink Dir-810L Firmware: all versions
• Dlink Dir-820L Firmware: all versions
• D-Link DIR-820LW: all versions
• Dlink Dir-826L Firmware: all versions
• Dlink Dir-830L Firmware: all versions
• Dlink Dir-836L Firmware: all versions

References

• https://github.com/doudoudedi/D-LINK_Command_Injection1/blob/main/D-LINK_Command_injection.md
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10264
• https://github.com/doudoudedi/D-LINK_Command_Injection1/blob/main/D-LINK_Command_injection.md
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10264
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-45382

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