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Findings

CVE-2021-45382

D-Link Multiple Routers Remote Code Execution Vulnerability

Published Feb 17, 2022 · updated Jun 16, 2026 · dlink dir-820l firmware

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.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 17, 2022 · Catalog

    Detected

    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.

  2. Apr 4, 2022 · CISA KEV

    Known exploited

    The impacted product is end-of-life and should be disconnected if still in use.

  3. Apr 25, 2022 · CISA KEV

    Remediation due

    The impacted product is end-of-life and should be disconnected if still in use.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Required action

The impacted product is end-of-life and should be disconnected if still in use.

CISA due date Apr 25, 2022

Affected

  • cpe dlink/dir-810l firmwareversion unspecified
  • cpe dlink/dir-820l firmwareversion unspecified
  • cpe dlink/dir-820lw firmwareversion unspecified
  • cpe dlink/dir-826l firmwareversion unspecified
  • cpe dlink/dir-830l firmwareversion unspecified
  • cpe dlink/dir-836l firmwareversion unspecified
  • vendor D-Link Multiple Routersversion unspecified

Sources

  • CISA KEVCVE-2021-45382

    A remote code execution vulnerability exists in all series H/W revisions routers via the DDNS function in ncc2 binary file.

    cisa.gov
  • CVE.orgCVE-2021-45382

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2021-45382

    30-day exploitation probability 97.8%

    first.org
  • NIST NVDCVE-2021-45382

    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

    nvd.nist.gov

References

CVE-2021-45382 · ZeroDay Findings