CVE-2020-15956

Name: CVE-2020-15956
Creator: NVD / NIST
Published: 2020-08-04T20:15:12.29+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 10.52%

Last modified Jun 17, 2026

CVE-2020-15956 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 10.52% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

10.52%

95.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Acti	Nvr	2.3.04.07
Acti	Nvr	3.0.12.42

References

http://packetstormsecurity.com/files/158771/ACTi-NVR3-Standard-Professional-Server-3.0.12.42-Denial-Of-Service.htmlExploit, Third Party Advisory
https://github.com/megamagnus/cve-2020-15956Exploit, Third Party Advisory
https://www2.acti.com/nvr3Product, Vendor Advisory
http://packetstormsecurity.com/files/158771/ACTi-NVR3-Standard-Professional-Server-3.0.12.42-Denial-Of-Service.htmlExploit, Third Party Advisory
https://github.com/megamagnus/cve-2020-15956Exploit, Third Party Advisory
https://www2.acti.com/nvr3Product, Vendor Advisory

Timeline

Published: Aug 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15956?

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.

How severe is CVE-2020-15956?

CVE-2020-15956 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 10.52% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15956?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15956?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST