Read the docs
TI-2021-20503 Aliases CVE-2021-45382GHSA-5wgx-qvpv-2353

A Remote Command Execution (RCE) vulnerability exists in all series H/W revisions D-link…

Priority CRITICAL 100Exploited in the wildCWE-78Published · 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 · CISA ADP. Fix status from CNA. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation Active In CISA KEV since 2022-04-04CISA due date 2022-04-25
EPSS 0.97836 99th 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

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:o:dlink:dir-820l_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dir-820l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dir-820lw_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dir-820lw:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dir-826l_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dir-826l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dir-830l_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dir-830l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
cpe:2.3:o:dlink:dir-836l_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dir-836l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
  • cpe:2.3:o:dlink:dir-820l_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dir-820l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dir-820lw_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dir-820lw:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dir-826l_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dir-826l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dir-830l_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dir-830l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
  • cpe:2.3:o:dlink:dir-836l_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dir-836l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:dlink:dir-810l_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableD-Link Japan K.K.
cpe:2.3:h:dlink:dir-810l:-:*:*:*:*:*:*:*not specified by NVDRunning onD-Link Japan K.K.
  • cpe:2.3:o:dlink:dir-810l_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·D-Link Japan K.K.
  • cpe:2.3:h:dlink:dir-810l:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2022-04-04 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2021-45382
  3. 2026-10-03 Alias added: GHSA-5wgx-qvpv-2353

References

  • TI-2024-03070 D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi command injection KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-03069 D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi hard-coded credentials KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-00708 D-Link DIR-859 HTTP POST Request hedwig.cgi path traversal KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-10693 OS Command injection vulnerability in D-Link DIR820LA1_FW105B03 allows attackers to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-17249 D-Link Go-RT-AC750 GORTAC750_revA_v101b03 and GO-RT-AC750_revB_FWv200b02 are vulnerable… KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09657 D-Link DIR-820L 1.05B03 was discovered to contain remote command execution (RCE)… KEVCVSS 3.1CRITICAL 9.8
See all 979 →

Sources