Hikvision DS-2CD1321-I 5.7.21 Build 230819 challenge denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Hikvision DS-2CD1321-I 5.7.21 Build 230819. Affected is an unknown function of the file /ISAPI/Security/challenge. Performing a manipulation results in denial of service. This vulnerability is known as CVE-2025-45851. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Hikvision DS-2CD1321-I 5.7.21 Build 230819. It has been classified as critical. This affects an unknown code of the file /ISAPI/Security/challenge. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at crashpark.weebly.com. This vulnerability is uniquely identified as CVE-2025-45851 since 04/22/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-19428). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/22/2025 CVE reserved
06/27/2025 +66 days Advisory disclosed
06/27/2025 +0 days VulDB entry created
06/30/2025 +3 days VulDB entry last update

Sourcesinfo

Advisory: crashpark.weebly.com
Status: Not defined

CVE: CVE-2025-45851 (🔒)
GCVE (CVE): GCVE-0-2025-45851
GCVE (VulDB): GCVE-100-314115
EUVD: 🔒

Entryinfo

Created: 06/27/2025 15:26
Updated: 06/30/2025 19:29
Changes: 06/27/2025 15:26 (53), 06/28/2025 04:22 (1), 06/30/2025 19:29 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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