ACTi NVR3 Standard Server 3.0.12.42 ActiveMediaServer.exe buffer overflow

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability was found in ACTi NVR3 Standard Server 3.0.12.42. It has been rated as critical. This affects an unknown function of the file ActiveMediaServer.exe. The manipulation leads to buffer overflow. This vulnerability is traded as CVE-2020-15956. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in ACTi NVR3 Standard Server 3.0.12.42. It has been rated as critical. This issue affects an unknown function of the file ActiveMediaServer.exe. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

ActiveMediaServer.exe in ACTi NVR3 Standard Server 3.0.12.42 allows remote unauthenticated attackers to trigger a buffer overflow and application termination via a malformed payload.

The weakness was shared 08/04/2020. The identification of this vulnerability is CVE-2020-15956 since 07/27/2020. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

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 Exploit-DB (48731). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

ACTi

Name

NVR3 Standard Server

Version

3.0.12.42

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/27/2020 🔍
08/04/2020 +8 days 🔍
08/05/2020 +1 days 🔍
03/17/2025 +1685 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2020-15956 (🔍)
GCVE (CVE): GCVE-0-2020-15956
GCVE (VulDB): GCVE-100-159299
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/05/2020 07:41
Updated: 03/17/2025 06:00
Changes: 08/05/2020 07:41 (35), 08/05/2020 07:46 (17), 03/17/2025 06:00 (26)
Complete: 🔍
Cache ID: 216::103

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