CVE-2025-45851 Denial of service in n/a
Attackers can cause a Denial of Service on Hikvision IP cameras by sending a crafted POST request to a specific endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-45851?
CVE-2025-45851 is a high-severity denial of service vulnerability in n/a, published on 27 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-45851?
How do I fix CVE-2025-45851?
No fix has been published for CVE-2025-45851 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-45851 being exploited?
There is no known exploitation of CVE-2025-45851 in the wild and no public exploit code.
Sources
Also known as GHSA-phj5-p24p-qf22.