CVE-2025-45851 Details
Description
An issue in Hikvision DS-2CD1321-I V5.7.21 build 230819 allows attackers to cause a Denial of Service (DoS) via sending a crafted POST request to the endpoint /ISAPI/Security/challenge. The vendor has stated that upgrading to V5.7.23_SP2 fixes the issue.
A denial-of-service vulnerability has been identified in the Hikvision DS-2CD1321-I IP camera, running firmware version V5.7.21 build 230819. The issue allows attackers to disrupt the camera's operation by sending crafted POST requests to the /ISAPI/Security/challenge endpoint. Exploitation involves using a large payload in the PrivateKey parameter, which causes resource exhaustion and crashes the camera's processing, leading to a reboot.
Users are advised to upgrade to Hikvision firmware version V5.7.23_SP2, which addresses this vulnerability by restricting the number of connections to the device. This update can be applied through the Hikvision Firmware Download page.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 27, 2025CISA-ADP
Assessed Jun 27, 2025References to Advisories, Solutions, and Tools
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Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| Hikvision DS-2CD1321-I | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 30, 2025 | CVE Modified | [email protected] |
| Jun 27, 2025 | CVE Modified | CISA-ADP |
| Jun 27, 2025 | New CVE Received | [email protected] |
Volerion