CVE-2011-4723
MediumExploitedPublic exploitThe D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information via unspecified vectors.
Published Dec 20, 2011 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2011-4723 is a medium-severity vulnerability (CVSS 5.7 v3.1) affecting Dir-300 Firmware (Dlink).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 13, 2018. Public exploit code is available.
- EPSS estimates a 3.1% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
5.7
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
3.1%
Higher than 87.4% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2011-4723 brief as a PDF
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Description
The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information via unspecified vectors.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Sep 8, 2022 | Sep 29, 2022 | Not reported |
| Industry KEV feed | Jul 13, 2018 | Sep 29, 2022 | Not reported |
| CIRCL KEV | Sep 8, 2022 | Sep 29, 2022 | Not reported |
| ENISA EUVD | Sep 8, 2022 | n/a | Not reported |
Required action: The impacted product is end-of-life and should be disconnected if still in use.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Dir-300 FirmwareDlink | See advisory | n/a |
Timeline
Publicly disclosed
Dec 20, 2011
Added to Industry KEV feed
Jul 13, 2018
Added to CISA KEV
Sep 8, 2022
Added to CIRCL KEV
Sep 8, 2022
Added to ENISA EUVD
Sep 8, 2022
Last updated
Apr 22, 2026
Weakness Type
- CWE-312 Cleartext Storage of Sensitive Information
References
FAQ
Common Questions.
The D-Link DIR-300 router stores cleartext passwords, which allows context-dependent attackers to obtain sensitive information via unspecified vectors.
Affected: Dir-300 Firmware (Dlink). The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 13, 2018.
Yes. It was added on Sep 8, 2022 with a federal remediation due date of Sep 29, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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