CVE-2026-2055
Published: 06 February 2026
Summary
CVE-2026-2055 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) vulnerability in Dlink Dir-605L Firmware. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 25.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Automated marking applies security attributes to system outputs, making it harder for attackers to exploit unmarked sensitive information leading to unauthorized exposure.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
Enforces rules governing access to the system and its data from external systems based on established trust relationships.
This control requires verifying that a sharing partner's access authorizations match the information's restrictions before sharing occurs.
Review and removal of nonpublic information from publicly accessible systems directly prevents exposure of sensitive data to unauthorized actors.
Data mining protection mechanisms detect and block unauthorized bulk extraction of sensitive data, directly mitigating exposure to unauthorized actors.
Literacy training teaches users to recognize and avoid actions that result in unauthorized exposure of sensitive information.
Retaining and monitoring training records confirms personnel have completed privacy and security awareness training on handling sensitive data, reducing the chance of unauthorized exposure due to lack of knowledge.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote unauthenticated info disclosure in public-facing DHCP handler directly enables exploitation of exposed network devices.
NVD Description
A weakness has been identified in D-Link DIR-605L and DIR-619L 2.06B01/2.13B01. The affected element is an unknown function of the component DHCP Client Information Handler. Executing a manipulation can lead to information disclosure. The attack may be launched remotely. The…
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exploit has been made available to the public and could be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer.
Deeper analysisAI
CVE-2026-2055 is an information disclosure vulnerability affecting D-Link DIR-605L and DIR-619L routers running firmware versions 2.06B01 and 2.13B01. The issue resides in an unknown function within the DHCP Client Information Handler component, which can be manipulated to leak sensitive data. Assigned a CVSS v3.1 base score of 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N), it maps to CWE-200 (Exposure of Sensitive Information), CWE-284 (Improper Access Control), and NVD-CWE-Other. This flaw impacts only products that are no longer supported by the vendor.
The vulnerability enables remote exploitation over the network with low complexity and no authentication or user interaction required. Attackers can trigger the disclosure without privileges, achieving low-impact confidentiality loss while leaving integrity and availability unaffected. A proof-of-concept exploit is publicly available, facilitating potential attacks against exposed instances.
VulDB advisories and referenced GitHub repositories detail the issue but note no patches or mitigations from the vendor, as the affected products are end-of-life and unsupported. Security practitioners should prioritize network segmentation, firewall rules to block unauthorized DHCP interactions, or device replacement to mitigate exposure.
Details
- CWE(s)