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Vulnerability Detail

CVE-2026-49008UPDATED Verified Sceawere Triage Sources: NVD / CISA KEV

Firmware Credential Disclosure Vulnerability

Vulnerability Metadata

Severity
Medium
Score / CVSS
6.5
Creation Date
1d ago
Vendor
ZTE
Product
F689
Attack Type
CWE-321 Use of hard-coded cryptographic key
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Complexity
LOW

Narrative and Response

Description

By accessing unencrypted information in the device firmware, an attacker can obtain credentials related to the integrity verification of a specific application function on the device.

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": "6.5",
  "pubDate": "2026-08-07T09:16:58.880Z",
  "pubdate": "2026-08-07T09:16:58.880Z",
  "executiveSummary": "This vulnerability involves the exposure of sensitive cryptographic or authentication credentials stored in plain text within device firmware. An unauthorized local or physical attacker capable of extracting and analyzing the unencrypted device firmware can retrieve static credentials utilized for the integrity verification of a specific application function. The primary impact of this security flaw is the circumvention of application integrity checks, potentially allowing malicious actors to execute unauthorized code, tamper with critical software components, or bypass security enforcement mechanisms designed to protect the affected system. The risk implication is significant, as compromise of integrity verification keys undermines the entire trust chain of the device. Attacker capabilities require sufficient access to extract the firmware binary, followed by static analysis to locate the plaintext secrets. No specific authentication or network exposure is inherently required to extract the firmware if physical or direct storage access is achievable. Remediation requires eliminating hardcoded credentials, implementing robust firmware encryption, and enforcing secure key management practices.",
  "technicalDetails": "The root cause of this vulnerability lies in the insecure storage of sensitive operational data within the device firmware image without adequate encryption or obfuscation. Specifically, the firmware contains plaintext credentials associated with the integrity verification routines of a critical application function. The vulnerable component is the storage mechanism of the firmware binary itself, which fails to protect static secrets embedded during the compilation or provisioning phase. Exploitation of this vulnerability occurs through a structured attack flow. First, an attacker obtains a copy of the device firmware, either through direct extraction from physical flash memory chips, interception of an unencrypted over-the-air (OTA) update, or retrieval from a publicly accessible vendor repository. Second, the attacker performs binary analysis and reverse engineering on the extracted firmware image utilizing tools such as disassemblers, decompilers, or automated string extraction utilities. Third, by searching for patterns, configuration files, or hardcoded strings within the filesystem or raw binary data, the attacker successfully identifies and extracts the integrity verification credentials. Armed with these valid credentials, the attacker can bypass or forge integrity checks mandated by the specific application function. This enables the unauthorized modification of application binaries, configuration files, or execution parameters without triggering security alarms or validation failures. The post-exploitation impact includes unauthorized code execution, tampering with device logic, and potential escalation of privileges depending on the scope of the compromised application function. Since the vulnerability stems from static design flaws in credential handling, the issue affects all instances running the vulnerable firmware versions unless explicitly patched or re-provisioned."
}
CVE-2026-49008: Firmware Credential Disclosure Vulnerability (MEDIUM Severity, CVSS: 6.5) - Sceawere