CVE-2024-28339
Description
An information leak in the debuginfo.htm component of Netgear CBR40 2.5.0.28, Netgear CBK40 2.5.0.28, and Netgear CBK43 2.5.0.28 allows attackers to obtain sensitive information without any authentication required.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
An unauthenticated information leak in the debuginfo.htm page of Netgear CBR40, CBK40, and CBK43 routers exposes sensitive device details.
Vulnerability
The debuginfo.htm endpoint on Netgear CBR40, CBK40, and CBK43 routers running firmware version 2.5.0.28 exposes sensitive device information without authentication [2]. This hidden page is part of the web management interface and is not protected by any access controls [2].
Exploitation
An attacker with network access to the router's web interface (typically on the LAN, e.g., http://192.168.1.1/debuginfo.htm) can simply visit the URL without any credentials or user interaction [2]. No special privileges or prior knowledge are required.
Impact
Successful exploitation leaks information such as the WAN connection type and product model name [2]. While not directly leading to remote code execution, this information can aid further attacks by revealing network configuration details.
Mitigation
Netgear has not yet released a firmware update to address this issue as of the publication date [1]. Users should restrict access to the web management interface to trusted networks and consider disabling remote management. The affected products are likely end-of-life or unsupported; check Netgear's security advisory for updates [1].
AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
4- Netgear/CBR40description
Patches
0No patches discovered yet.
Vulnerability mechanics
Root cause
"The debuginfo.htm endpoint lacks authentication checks, allowing unauthenticated access to sensitive device information."
Attack vector
An attacker on the same local network can visit `http://192.168.1.1/debuginfo.htm` without any authentication or permission [ref_id=2]. The endpoint is a hidden debug page that is not protected by the router's authentication mechanism. The researcher notes that "without any permition, attacker can get sensitive information from the victim URL" [ref_id=2]. The exposed information includes the WAN connection type (e.g., DHCP) and the product model name [ref_id=2].
Affected code
The debuginfo.htm endpoint on the web management interface of Netgear CBR40, CBK40, and CBK43 routers running firmware version 2.5.0.28 exposes sensitive information without authentication [ref_id=2]. The researcher identifies this as a "hidden interface" that "isn't been protected by authentication" [ref_id=2]. No patch or specific source file is provided in the bundle.
What the fix does
The bundle does not include a patch or vendor advisory with remediation details. The NETGEAR security policy page [ref_id=1] describes the general vulnerability reporting and handling process but does not mention a specific fix for this CVE. No fix is published in the provided materials. The researcher's write-up [ref_id=2] does not include remediation guidance either.
Preconditions
- networkAttacker must have network access to the router's web management interface (typically on the local LAN at 192.168.1.1)
- authNo authentication or prior access is required
Reproduction
Visit `http://192.168.1.1/debuginfo.htm` from a web browser on the same local network as the affected router. The page will expose sensitive information such as the WAN connection type and product model name without requiring any authentication [ref_id=2].
Generated on May 26, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
2News mentions
0No linked articles in our index yet.