CVE-2011-4723

Exp

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

Published: 2011-12-20 Last update: 2026-04-22 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4723 is rated Critical Active Threat (82.2/100): CVSS Medium severity, with high exploitation likelihood (EPSS 14.05%, 94th percentile). CISA KEV confirms active exploitation (added 2022-09-08) affecting D-Link / DIR-300 Router. a weakness (CWE-312) Unauthenticated remote administrative access may be possible. EPSS rose +1.32% over the last day, indicating growing attacker interest. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2011-4723

Name: D-Link DIR-300 Router Cleartext Storage of a Password Vulnerability · CISA KEV detail

Exploit added: 2022-09-08

Action due: 2022-09-29

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

Exploit prediction scoring system (EPSS) score for CVE-2011-4723

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-22 12.73% 14.05% +1.32%
2 2025-10-22 8.34% 12.73% +4.39%
3 2025-09-13 — 8.34% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4723

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.7 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.1 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0
6.8 2.0 MEDIUM
AV:N/AC:L/Au:S/C:C/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 6.9 [email protected]

Weakness enumeration for CVE-2011-4723

Affected software / configurations for CVE-2011-4723

Vendor Product Version Raw CPE
dlink dir-300_firmware — cpe:2.3:o:dlink:dir-300_firmware:-:*:*:*:*:*:*:*

References for CVE-2011-4723

cvelogic Threat Intelligence