Background exploitation KEV catalog
CVE-2011-4723

D-Link DIR-300 Router Cleartext Storage of a Password Vulnerability

The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information via unspecified vectors.

CheckOps priority index
3.6/10 Patch within 7 days
Severity5.7
Probability0.3
Exploitation2/5

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

EPSS · today 3.1% higher than 87.6% of CVEs
CVSS 3.1 5.7 AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:
Exploited for 1,517 days 08 Sept 2022
CISA due date 29 Sept 2022 for US federal agencies

Exploitation probability EPSS · FIRST

05010026 Sep05 Oct15 Oct24 Oct02 Nov
EPSS probability (%)Percentile among all CVEs

Exploitation signals 2 / 5

  • KEV catalog (CISA)08 Sept 2022
  • Exploited in EUVD (ENISA)08 Sept 2022
  • Used by ransomwareno
  • EPSS above 10 %3.1%
  • No account, over the networkno

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

Affected products

DIR-300 Router
Weaknesses (CWE)

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

  1. Published

  2. Exploitation reported (ENISA)

  3. Added to the KEV catalog

  4. CISA remediation due date

References

Other exploited vulnerabilities from the same vendor

  • CVE-2025-29635D-Link DIR-823X Command Injection Vulnerability
    7.3 · Background exploitation
  • CVE-2022-37055D-Link Routers Buffer Overflow Vulnerability
    8.0 · Background exploitation
  • 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

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Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors. All exploited vulnerabilities