{"id":86729,"date":"2026-03-20T00:32:05","date_gmt":"2026-03-20T00:32:05","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-27073-denial-of-service-vulnerability-due-to-ndp-instance-creation","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-27073-denial-of-service-vulnerability-due-to-ndp-instance-creation\/","title":{"rendered":"CVE-2025-27073: Denial of Service Vulnerability due to NDP Instance Creation<\/strong>"},"content":{"rendered":"

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

The vulnerability, CVE-2025-27073, refers to a transient Denial of Service (DoS) that occurs during the creation of a Network Discovery Protocol (NDP) instance. This vulnerability affects network systems that rely on NDP for network communication, and it can lead to potential system compromise or data leakage. The impact of this vulnerability is significant as it can disrupt network services and compromise the integrity of network data if not addressed promptly.<\/p>\n

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

CVE ID: CVE-2025-27073
\nSeverity: High (7.5 CVSS score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Network Operating System | All versions before 3.0
\nNetwork Device Manager | Versions 2.0 to 2.5<\/p>\n

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

The exploit works by sending a specially crafted NDP packet to a target device. During the processing of this packet, the system attempts to create a new NDP instance. However, due to the malformed nature of the packet, this causes an unexpected condition within the system leading to a transient DoS. The attacker can then exploit this instability to compromise the system or leak sensitive data.<\/p>\n

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

Here’s a conceptual example of an NDP packet that might exploit the vulnerability:<\/p>\n

echo \"60 00 00 00 00 40 3A FF FE 80 00 00 00 00 00 00 02 02 B3 FF FE E4 00 00 FF 02 00 00 00 00 00 00 00 00 00 01 FF E4 00 00 87 00 6E 7E 00 00 00 00 01 01 02 02 B3 FF FE E4 00 00\" | xxd -r -p | nc -u -w1 [target IP] 546<\/code><\/pre>\n
The above command sends a specially crafted NDP packet to the target IP on port 546, which is the standard port for the DHCPv6 client.
\nPlease note that this is a conceptual demonstration of how the vulnerability might be exploited and should not be used maliciously.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate this vulnerability, it is recommended to apply the vendor patch as soon as it is available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation by monitoring and blocking suspicious network traffic.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The vulnerability, CVE-2025-27073, refers to a transient Denial of Service (DoS) that occurs during the creation of a Network Discovery Protocol (NDP) instance. This vulnerability affects network systems that rely on NDP for network communication, and it can lead to potential system compromise or data leakage. The impact of this vulnerability is significant as […]<\/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":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86729","post","type-post","status-publish","format-standard","hentry"],"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