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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Credential externalization
MITRE ATT&CK

2 techniques across 2 tactics: Persistence, Credential Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.

Exploit ScenarioDerived

A remote attacker could gain access using credentials embedded in source code by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL + in CISA KEV (actively exploited), no patch available.
Exploited in the wild (CISA KEV) No patch listed yet 98.0% exploitation probability (EPSS)

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AnalysisAI

UNSUPPORTED WHEN ASSIGNED A vulnerability, which was classified as very critical, has been found in D-Link DNS-320L, DNS-325, DNS-327L and DNS-340L up to 20240403.cgi of the component HTTP GET. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Remove hard-coded credentials, use environment variables or secrets management, rotate exposed credentials immediately.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Use of Hard-coded Credentials (CWE-798), which allows attackers to gain access using credentials embedded in source code. UNSUPPORTED WHEN ASSIGNED A vulnerability, which was classified as very critical, has been found in D-Link DNS-320L, DNS-325, DNS-327L and DNS-340L up to 20240403.cgi of the component HTTP GET Request Handler. The manipulation of the argument user with the input messagebus leads to hard-coded credentials. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-259283. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced. Affected products include: Dlink Dns-320L Firmware, Dlink Dns-120 Firmware, Dlink Dnr-202L Firmware, Dlink Dns-315L Firmware, Dlink Dns-320 Firmware. Version information: up to 20240403..

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Added to CISA KEV
Jul 14, 2026 - 04:22 CISA
CVE Published
Apr 04, 2024 - 01:15 nvd
CRITICAL 9.8

DescriptionNVD

UNSUPPORTED WHEN ASSIGNED A vulnerability, which was classified as very critical, has been found in D-Link DNS-320L, DNS-325, DNS-327L and DNS-340L up to 20240403. This issue affects some unknown processing of the file /cgi-bin/nas_sharing.cgi of the component HTTP GET Request Handler. The manipulation of the argument user with the input messagebus leads to hard-coded credentials. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-259283. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced.

Threat Intelligence Overview

EPSS Score
98.0%
Top 0% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV Yes
Public POC Yes
EPSS 98.0%
Patch available No
Active threat Yes
Deciding rule
CRITICAL + in CISA KEV (actively exploited), no patch available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Immediate
Exploitation· derived
Active
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
High

Priority Score

217
Low Medium High Critical
KEV: +50
EPSS: +98
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:o:dlink:dns-320l_firmware:1.01.0702.2013:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-320l_firmware:1.03.0904.2013:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-320l_firmware:1.11:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-120_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dnr-202l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-315l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-320_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-320lw_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-321_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dnr-322l_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-323_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-325_firmware:1.01:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-326_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-327l_firmware:1.00.0409.2013:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-327l_firmware:1.09:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dnr-326_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-340l_firmware:1.08:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-343_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-345_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dns-726-4_firmware:-:*:*:*:*:*:*:*
+ 3 more
CVE-2024-3273 CRITICAL POC
9.8 Apr 04

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, was found in D-Link DNS-320L, DNS-325

CVE-2024-10915 CRITICAL POC
9.2 Nov 06

A vulnerability was found in D-Link DNS-320, DNS-320LW, DNS-325 and DNS-340L up to 20241028. Rated critical severity (CV

CVE-2024-10914 CRITICAL POC
9.2 Nov 06

A vulnerability was found in D-Link DNS-320, DNS-320LW, DNS-325 and DNS-340L up to 20241028. Rated critical severity (CV

CVE-2024-7832 HIGH POC
8.7 Aug 15

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-

CVE-2024-7831 HIGH POC
8.7 Aug 15

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L,

CVE-2024-7830 HIGH POC
8.7 Aug 15

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, was found in D-Link DNS-120, DNR-202L

CVE-2024-7829 HIGH POC
8.7 Aug 15

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, has been found in D-Link DNS-120, DNR

CVE-2024-7828 HIGH POC
8.7 Aug 15

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability classified as critical was found in D-Link DNS-120, DNR-202L, DNS-315L,

CVE-2014-7857 CRITICAL
9.8 Aug 25

D-Link DNS-320L firmware before 1.04b12, DNS-327L before 1.03b04 Build0119, DNR-326 1.40b03, DNS-320B 1.02b01, DNS-345 1

CVE-2024-10916 MEDIUM POC
6.9 Nov 06

A vulnerability classified as problematic has been found in D-Link DNS-320, DNS-320LW, DNS-325 and DNS-340L up to 202410

CVE-2024-8214 MEDIUM POC
5.3 Aug 27

A vulnerability classified as critical was found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DN

CVE-2024-8213 MEDIUM POC
5.3 Aug 27

A vulnerability classified as critical has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320L

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