{"id":51102,"date":"2025-06-11T07:23:10","date_gmt":"2025-06-11T07:23:10","guid":{"rendered":""},"modified":"2025-10-22T21:12:50","modified_gmt":"2025-10-23T03:12:50","slug":"cve-2025-5622-critical-buffer-overflow-vulnerability-in-d-link-dir-816-1-10cnb05","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5622-critical-buffer-overflow-vulnerability-in-d-link-dir-816-1-10cnb05\/","title":{"rendered":"CVE-2025-5622: Critical Buffer Overflow Vulnerability in D-Link DIR-816 1.10CNB05<\/strong>"},"content":{"rendered":"

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

A critical vulnerability has been discovered in the D-Link DIR-816 1.10CNB05, a widely-used wireless router. The vulnerability lies in the wirelessApcli_5g function of the \/goform\/wirelessApcli_5g file and can be exploited remotely to cause a stack-based buffer overflow. This flaw presents a significant threat to the cybersecurity landscape, as it allows attackers to launch remote attacks leading to a possible system compromise or data<\/a> leakage. Given that the exploit has been disclosed publicly and can readily be used, it is crucial for users and administrators to understand the severity of this issue<\/a> and take appropriate mitigation steps.<\/p>\n

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

CVE ID: CVE-2025-5622
\nSeverity: Critical (CVSS 9.8)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise or data<\/a> leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

D-Link DIR-816<\/a> | 1.10CNB05<\/p>\n

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

The exploit takes advantage of a stack-based buffer overflow vulnerability<\/a> in the wirelessApcli_5g function of the \/goform\/wirelessApcli_5g file. By manipulating the argument apcli_mode_5g\/apcli_enc_5g\/apcli_default_key_5g, an attacker can overflow the buffer<\/a>, potentially leading to arbitrary code execution or system crashes. This can further lead to system<\/a> compromise or data leakage.<\/p>\n

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

A conceptual example of how the vulnerability might be exploited is as follows:<\/p>\n

POST \/goform\/wirelessApcli_5g HTTP\/1.1\nHost: target_router_IP\nContent-Type: application\/x-www-form-urlencoded\napcli_mode_5g=malicious_payload&apcli_enc_5g=malicious_payload&apcli_default_key_5g=malicious_payload<\/code><\/pre>\n
In the above example, `malicious_payload` represents a specially crafted string designed to overflow the buffer of the target device<\/a>, thus exploiting the vulnerability.<\/p>\n
Mitigation<\/strong><\/p>\n
Given that this vulnerability affects products<\/a> that are no longer supported by the maintainer, users of the affected versions are advised to apply a vendor patch if available. If there are no patches available from the vendor, users should consider implementing a Web<\/a> Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure to protect against potential exploits. It’s also advisable to replace unsupported devices with new, supported ones to ensure continued protection against cybersecurity threats<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview A critical vulnerability has been discovered in the D-Link DIR-816 1.10CNB05, a widely-used wireless router. The vulnerability lies in the wirelessApcli_5g function of the \/goform\/wirelessApcli_5g file and can be exploited remotely to cause a stack-based buffer overflow. This flaw presents a significant threat to the cybersecurity landscape, as it allows attackers to launch remote […]<\/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":[],"product":[],"attack_vector":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-51102","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"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