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Fencer Vulns
high 7.5

CVE-2020-15956 in the critical feed json

ActiveMediaServer.exe in ACTi NVR3 Standard Server 3.0.12.42 allows remote unauthenticated attackers to trigger a buffer overflow and appli…

published 2020-08-04 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-7927

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
16.2%
EPSS 16.2% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

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.

Timeline

  1. Published
  2. First public exploit (EDB-48731)

Exploit prediction

16.16% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-48731 ACTi NVR3 Standard or Professional Server 3.0.12.42 - Denial of Service (PoC) dos, 2020-08-05
  • github.com https://github.com/megamagnus/cve-2020-15956 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/158771/ACTi-NVR3-Standard-Professional-Server-3.0.12.42-Denial-Of-Service.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.