What is CVE-2020-29165?

CVE-2020-29165 is a critical-severity vulnerability in Rainbowfishsoftware Pacsone Server, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2021-02-03.

How severe is CVE-2020-29165?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2020-29165 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Rainbowfishsoftware Pacsone Server

CVE-2020-29165

PacsOne Server (PACS Server In One Box) below 7.1.1 is affected by incorrect access control, which can result in remotely gaining administrator privileges.

Vulnerability class: Broken Authentication

Published 2021-02-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.6th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Rainbowfishsoftware Pacsone Server

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

Public proof-of-concept exploits

References

gist.github.com/leommxj/0a32afeeaac960682c5b7c9ca8ed070d (Exploit, Third Party Advisory)
pacsone.net/download.htm (Product, Vendor Advisory)

Frequently asked questions

What is CVE-2020-29165?: CVE-2020-29165 is a critical-severity vulnerability in Rainbowfishsoftware Pacsone Server, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2021-02-03.
How severe is CVE-2020-29165?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-29165 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.