Kguard Digital Video Recorder 108 v2 Application Server improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical was found in Kguard Digital Video Recorder 104 and Digital Video Recorder 108 v2. Affected by this vulnerability is some unknown functionality of the component Application Server. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Kguard Digital Video Recorder 104, 108, v2 does not have any authorization or authentication between an ActiveX client and the application server.

The bug was discovered 06/24/2015. The weakness was shared 08/18/2017 by Federick Joe P Fajardo as not defined posting (Bugtraq). It is possible to read the advisory at This vulnerability is known as CVE-2015-4464 since 06/10/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 786 days. During that time the estimated underground price was around $0-$5k.

Applying a patch is able to eliminate this problem.

The entries VDB-138104, VDB-148967, VDB-148971 and VDB-153657 are related to this item.





CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍


Class: Improper authentication
CWE: CWE-287

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: Patch
Status: 🔍

0-Day Time: 🔍


03/10/2015 🔍
06/10/2015 +92 days 🔍
06/24/2015 +14 days 🔍
08/18/2017 +786 days 🔍
08/18/2017 +0 days 🔍
08/19/2017 +1 days 🔍
12/16/2022 +1945 days 🔍


Advisory: 132437
Researcher: Federick Joe P Fajardo
Status: Not defined

CVE: CVE-2015-4464 (🔍)
SecurityFocus: 73032 - Kguard Digital Video Recorder Multiple Security Vulnerabilities

See also: 🔍


Created: 08/19/2017 08:39 AM
Updated: 12/16/2022 08:37 AM
Changes: 08/19/2017 08:39 AM (64), 11/08/2019 03:04 PM (1), 12/16/2022 08:37 AM (4)
Complete: 🔍
Cache ID: 3:12C:40


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