D-Link Multiple NAS Devices Use of Hard-Coded Credentials Vulnerability
** 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…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)11 Apr 2024
- Exploited in EUVD (ENISA)11 Apr 2024
- Used by ransomwareno
- EPSS above 10 %98.1%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: This vulnerability affects legacy D-Link products. All associated hardware revisions have reached their end-of-life (EOL) or end-of-service (EOS) life cycle and should be retired and replaced per vendor instructions.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
** 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.
Affected products
- 20240403
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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CISA remediation due date
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EPSS peak: 98.1%
References
Other exploited vulnerabilities from the same vendor
- CVE-2025-29635D-Link DIR-823X Command Injection Vulnerability7.3 · Background exploitation
- CVE-2022-37055D-Link Routers Buffer Overflow Vulnerability8.0 · Background exploitation
- CVE-2022-40799D-Link DNR-322L Download of Code Without Integrity Check Vulnerability6.3 · Background exploitation
- CVE-2020-25079D-Link DCS-2530L and DCS-2670L Command Injection Vulnerability6.9 · Background exploitation
- CVE-2020-25078D-Link DCS-2530L and DCS-2670L Devices Unspecified Vulnerability8.3 · Background exploitation
- CVE-2024-0769D-Link DIR-859 Router Path Traversal Vulnerability7.0 · Background exploitation