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Vulnerability Detail

CVE-2026-49007UPDATED Verified Sceawere Triage Sources: NVD / CISA KEV

Firmware Unencrypted Credential Disclosure

Vulnerability Metadata

Severity
High
Score / CVSS
7.5
Creation Date
1d ago
Vendor
ZTE
Product
F689
Attack Type
CWE-798 Common Weakness Enumeration-798
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Complexity
LOW

Narrative and Response

Description

By accessing unencrypted information in the device firmware, an attacker can obtain the initial login credentials for the device's web interface.

Executive Summary

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Technical Details

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Mitigations

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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References

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Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Intelligence References Locked

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Additional Metadata

{
  "score": "7.5",
  "pubDate": "2026-08-07T08:16:46.457Z",
  "pubdate": "2026-08-07T08:16:46.457Z",
  "executiveSummary": "An unencrypted credential disclosure vulnerability exists within the device firmware, allowing unauthorized actors to extract initial authentication secrets for the administrative web interface. The primary impact of this vulnerability is the compromise of device confidentiality and integrity, enabling unauthorized administrative access. The affected systems encompass devices utilizing the vulnerable firmware configuration where sensitive authentication material is stored in plaintext. The risk implications are severe, as initial login credentials grant attackers complete control over the device management plane, facilitating further network penetration and persistent compromise. The attacker capabilities required for exploitation include local or physical access to the device firmware image or storage medium to extract the unencrypted data. Exploitation requirements rely entirely on the ability to inspect, parse, or extract the device firmware binaries to locate the exposed plaintext strings without requiring prior authentication or cryptographic key materials.",
  "technicalDetails": "The root cause of this vulnerability stems from the improper handling and storage of sensitive authentication secrets within the device firmware, where initial administrative login credentials are embedded or stored in unencrypted, plaintext formats. The vulnerable component consists of the device firmware package, specifically the configuration files, binary images, or filesystem structures containing hardcoded initialization parameters. Exploitation occurs when an attacker obtains the firmware image through legitimate download channels, direct device extraction, or sniffing update mechanisms, and subsequently parses the binary data using standard reverse engineering tools, string extraction utilities, or filesystem mounting techniques. The attack flow initiates with the acquisition of the target firmware binary. The attacker then executes string analysis or extracts the compressed filesystem to locate configuration files, initialization scripts, or embedded databases containing the plaintext credentials. Once the initial login credentials are recovered from the unencrypted firmware artifacts, the attacker bypasses the intended security controls by authenticating directly to the device's web interface using the harvested credentials. The authentication requirements for this initial extraction phase are nonexistent, as the firmware image itself acts as a static, unauthenticated information source. Privilege requirements are similarly absent for the credential harvesting step, though administrative privileges are ultimately achieved upon successful authentication to the web interface. The network exposure of the vulnerable web interface dictates whether the harvested credentials can be leveraged remotely or require localized access to the management network. The payload behavior involves the passive extraction of confidential data structures embedded within the compiled code or filesystem layers. Post-exploitation impact includes full administrative compromise of the affected device, unauthorized modification of system settings, interception of transit traffic, potential pivoting into internal network segments, and establishment of persistent access through backdoor configuration changes."
}
CVE-2026-49007: Firmware Unencrypted Credential Disclosure (HIGH Severity, CVSS: 7.5) - Sceawere