D-Link Multiple Routers Remote Code Execution Vulnerability

CheckOps priority index

9.3/10 Patch within 24 h

Severity9.8

Probability9.8

Exploitation4/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 97.8% higher than 99.9% of CVEs

CVSS 3.1 9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:

Exploited for 1,674 days 04 Apr 2022

CISA due date 25 Apr 2022 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 4 / 5

KEV catalog (CISA)04 Apr 2022
Exploited in EUVD (ENISA)04 Apr 2022
Used by ransomwareno
EPSS above 10 %97.8%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

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

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

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

Multiple Routers

Weaknesses (CWE)

CWE-78

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

17 Feb 2022
Published
04 Apr 2022
Exploitation reported (ENISA)
04 Apr 2022
Added to the KEV catalog
25 Apr 2022
CISA remediation due date
26 Sept 2026
EPSS peak: 97.8%

References

Other exploited vulnerabilities from the same vendor

CVE-2025-29635D-Link DIR-823X Command Injection Vulnerability
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CVE-2022-37055D-Link Routers Buffer Overflow Vulnerability
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CVE-2022-40799D-Link DNR-322L Download of Code Without Integrity Check Vulnerability
6.3 · Background exploitation
CVE-2020-25079D-Link DCS-2530L and DCS-2670L Command Injection Vulnerability
6.9 · Background exploitation
CVE-2020-25078D-Link DCS-2530L and DCS-2670L Devices Unspecified Vulnerability
8.3 · Background exploitation
CVE-2024-0769D-Link DIR-859 Router Path Traversal Vulnerability
7.0 · Background exploitation