ExploitedIn CISA KEV

CVE-2011-4723

Exploitation confirmed. First attested on 2022-09-08 by CISA-ADP, CISA KEV, GCVE · kevintel.

Published2011-12-20
WeaknessCWE-312

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC

2011-12-2011:55CVE publishedNVD
2022-09-08Added to the CISA KEV catalogCISA KEV
2022-09-08Listed as exploited by GCVEGCVE
2022-09-08Exploitation first reportedCISA KEV
2025-02-1020:01SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2011-4723?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2011-4723?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Dlink dir-300 firmwareversion to verify

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

CISA’s required action: The impacted product is end-of-life and should be disconnected if still in use.due 2022-09-29

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

CISA Known Exploited Vulnerability

Date Added: 2022-09-08
Patch Due Date: 2022-09-29
Ransomware Use: Unknown
Required Action: The impacted product is end-of-life and should be disconnected if still in use.

Sources

CISA KEVKEV entry2022-09-08
GCVEexploitation2022-09-08
CISA-ADPSSVC decisionactive2025-02-10
OpenCVESSVC decisionactive—
CISA-ADPCVSS 3.15.72025-02-10
NVDCVSS 2.06.8read 2026-10-23
CISA-ADPweakness (CWE)CWE-3122025-02-10
NVDweakness (CWE)CWE-312read 2026-10-23
FIRST EPSSEPSS score3.1 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Published: 2011-12-20
Last Modified: 2026-06-16
NVD status: Analyzed

Frequently asked questions

What is CVE-2011-4723?

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

Is CVE-2011-4723 actively exploited?

Yes. CVE-2011-4723 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-09-29.

What is the CVSS score for CVE-2011-4723?

CVE-2011-4723 has a CVSS v3 base score of 5.7 (MEDIUM severity), with vector string CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

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