CVE-2011-4723: D-Link DIR-300 Router Cleartext Storage of a Password Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 8 Sep 2022, 3,915 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 3.1%
EPSS score, percentile 87.6 of all scored records
- How severe?
- 5.7 Medium
CVSS v3.1 base score, from CISA's enrichment of the record
- What should I do?
CISA deadline 29 Sep 2022. The impacted product is end-of-life and should be disconnected if still in use.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Not stated. The CVE record gives vendor and product as “n/a” and the version as “unspecified”.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
The impacted product is end-of-life and should be disconnected if still in use.
CISA due date for this action: 29 September 2022.
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
Linked from CISA's catalog entry
- https://www.dlink.com/uk/en/support/product/dir-300-wireless-g-router
- https://nvd.nist.gov/vuln/detail/CVE-2011-4723
Affected products and versions
The CVE record does not name affected products or versions: vendor and product are “n/a” and the version is “unspecified”.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2011-4723 to its Known Exploited Vulnerabilities (KEV) catalog on 8 Sep 2022.
- CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
- The due date CISA sets for the required action is 29 Sep 2022.
- The CVE record was published on 20 Dec 2011, 3,915 days before it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 5.7 (Medium), taken from CISA's enrichment of the record.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 3.1% (percentile 87.6), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact partial.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
Description
The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information via unspecified vectors.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Weakness
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| 20 Dec 2011 | CVE record published |
| 8 Sep 2022 | Added to CISA KEV |
| 29 Sep 2022 | CISA due date for the required action |
| 22 Oct 2025 | CVE record last updated |
References
More exploited D-Link vulnerabilities
- CVE-2025-29635: D-Link DIR-823X Command Injection Vulnerability
- CVE-2022-37055: D-Link Routers Buffer Overflow Vulnerability
- CVE-2020-25078: D-Link DCS-2530L and DCS-2670L Devices Unspecified Vulnerability
- CVE-2020-25079: D-Link DCS-2530L and DCS-2670L Command Injection Vulnerability
- CVE-2022-40799: D-Link DNR-322L Download of Code Without Integrity Check Vulnerability
- CVE-2024-0769: D-Link DIR-859 Router Path Traversal Vulnerability