{"id":55082,"date":"2025-06-25T08:48:42","date_gmt":"2025-06-25T08:48:42","guid":{"rendered":""},"modified":"2025-11-02T11:12:49","modified_gmt":"2025-11-02T17:12:49","slug":"cve-2025-45784-hardcoded-credentials-in-d-link-dph-400s-se-voip-phone-firmware","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-45784-hardcoded-credentials-in-d-link-dph-400s-se-voip-phone-firmware\/","title":{"rendered":"CVE-2025-45784: Hardcoded Credentials in D-Link DPH-400S\/SE VoIP Phone firmware<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The vulnerability in focus, CVE-2025-45784, is a critical security flaw found in D-Link DPH-400S\/SE VoIP Phone v1.01. The device contains hardcoded provisioning variables, which include sensitive user credentials like PROVIS_USER_PASSWORD. This vulnerability is dangerous as it could potentially expose sensitive user<\/a> data and allow unauthorized access to device functions or user accounts.
\nThis vulnerability is particularly relevant to organizations and individuals who use the affected D-Link VoIP phone<\/a>. In the wrong hands, this vulnerability can lead to serious security<\/a> breaches, including system compromise and data leakage. Thus, it is crucial to understand the nature of this vulnerability and take appropriate measures to mitigate its impact<\/a>.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-45784
\nSeverity: Critical (9.8 CVSS Score)
\nAttack Vector: Local
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Unauthorized access<\/a> to device functions or user accounts, potential system compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

D-Link DPH-400S\/SE VoIP Phone | v1.01<\/p>\n

How the Exploit Works<\/strong><\/p>\n

An attacker with access to the firmware image can extract the hardcoded credentials<\/a> using static analysis tools such as strings or xxd. These tools can scan the firmware binary to identify and extract strings that resemble user credentials<\/a>. Once the attacker has these credentials, they can potentially gain unauthorized access to device functions or user accounts<\/a>.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Given below is a
\nconceptual<\/strong>
\n example using the `strings` command in Linux to extract the hardcoded credentials<\/a> from the firmware image:<\/p>\n

$ strings firmware_image.bin | grep PROVIS_USER_PASSWORD<\/code><\/pre>\n
This command scans the binary file<\/a> firmware_image.bin and searches for the string “PROVIS_USER_PASSWORD. If the hardcoded credentials<\/a> are present, this command will output them to the console.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To protect against this vulnerability<\/a>, users of the affected D-Link VoIP Phone should apply the vendor’s patch as soon as possible. If a patch is not available or cannot be applied immediately, a web application firewall (WAF) or an intrusion detection system (IDS) can be used as a temporary measure to detect and block exploitation attempts. Furthermore, organizations should follow best practices for firmware security, including regularly updating firmware and minimizing the use of hardcoded credentials<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The vulnerability in focus, CVE-2025-45784, is a critical security flaw found in D-Link DPH-400S\/SE VoIP Phone v1.01. The device contains hardcoded provisioning variables, which include sensitive user credentials like PROVIS_USER_PASSWORD. This vulnerability is dangerous as it could potentially expose sensitive user data and allow unauthorized access to device functions or user accounts. This vulnerability […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[88],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-55082","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-linux"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t