{"id":86524,"date":"2026-02-22T09:23:29","date_gmt":"2026-02-22T09:23:29","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-2962-denial-of-service-vulnerability-in-dns-implementation","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-2962-denial-of-service-vulnerability-in-dns-implementation\/","title":{"rendered":"CVE-2025-2962: Denial-of-Service Vulnerability in DNS Implementation<\/strong>"},"content":{"rendered":"

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

The vulnerability CVE-2025-2962 is a critical security flaw that impacts the DNS implementation of certain products. This vulnerability can lead to a denial-of-service attack, subsequently resulting in an infinite loop. It is integral for businesses to understand and mitigate this vulnerability promptly to avoid potential system compromise or data leakage.<\/p>\n

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

CVE ID: CVE-2025-2962
\nSeverity: High (7.5 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Denial of service, potential system compromise, or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

[Product 1] | [Version 1]
\n[Product 2] | [Version 2]<\/p>\n

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

The exploit works by sending maliciously crafted DNS requests to affected products. Due to an error in the DNS implementation, these requests trigger an infinite loop, leading to a denial-of-service condition. An attacker can exploit this vulnerability remotely without requiring any user interaction or special privileges.<\/p>\n

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

Below is a conceptual example of how the vulnerability might be exploited. This example demonstrates a malicious DNS request that could potentially trigger the vulnerability:<\/p>\n

dig @target.example.com ANY `perl -e 'print \"A\"x2500'`.com<\/code><\/pre>\n
This command sends a DNS lookup request to the target server for a non-existent domain comprising of a series of ‘A’ characters. If the target server is vulnerable, this request could cause a denial-of-service condition by triggering an infinite loop.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
The primary mitigation strategy is to apply a vendor-provided patch. If a patch is not yet available or cannot be applied immediately, a temporary mitigation strategy is to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS). These systems can be configured to identify and block malicious DNS requests that could potentially exploit this vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The vulnerability CVE-2025-2962 is a critical security flaw that impacts the DNS implementation of certain products. This vulnerability can lead to a denial-of-service attack, subsequently resulting in an infinite loop. It is integral for businesses to understand and mitigate this vulnerability promptly to avoid potential system compromise or data leakage. Vulnerability Summary CVE ID: […]<\/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-86524","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