{"id":86544,"date":"2026-02-24T21:29:10","date_gmt":"2026-02-24T21:29:10","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-45851-denial-of-service-vulnerability-in-hikvision-ds-2cd1321-i-camera","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-45851-denial-of-service-vulnerability-in-hikvision-ds-2cd1321-i-camera\/","title":{"rendered":"CVE-2025-45851: Denial of Service Vulnerability in Hikvision DS-2CD1321-I Camera<\/strong>"},"content":{"rendered":"

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

This report details a significant cybersecurity vulnerability, CVE-2025-45851, found in Hikvision’s DS-2CD1321-I V5.7.21 build 230819. The vulnerability can cause a Denial of Service (DoS) attack, which could potentially lead to system compromise or data leakage. Any organization utilizing this product version should immediately address this issue to avoid potential disruption and data loss.<\/p>\n

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

CVE ID: CVE-2025-45851
\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

Hikvision DS-2CD1321-I | V5.7.21 build 230819<\/p>\n

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

The exploit works by sending a specially crafted POST request to the endpoint \/ISAPI\/Security\/challenge on a device running the vulnerable software. This malformed request causes the system to crash, resulting in a Denial of Service (DoS) condition.<\/p>\n

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

Below is a conceptual example of how the vulnerability might be exploited. This is a sample HTTP request:<\/p>\n

POST \/ISAPI\/Security\/challenge HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ \"malicious_payload\": \"...\" }<\/code><\/pre>\n
In this example, the “malicious_payload” is intentionally left vague. In a real-world scenario, this would contain the crafted data that triggers the vulnerability, leading to a Denial of Service.<\/p>\n
Mitigation<\/strong><\/p>\n
The vendor, Hikvision, has released an update (V5.7.23_SP2) that fixes this vulnerability. Users are strongly advised to apply this patch immediately. Until the patch can be applied, users can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation measure. However, these are not long-term solutions and do not eliminate the vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This report details a significant cybersecurity vulnerability, CVE-2025-45851, found in Hikvision’s DS-2CD1321-I V5.7.21 build 230819. The vulnerability can cause a Denial of Service (DoS) attack, which could potentially lead to system compromise or data leakage. Any organization utilizing this product version should immediately address this issue to avoid potential disruption and data loss. 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":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86544","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