What is CVE-2020-9330?

CVE-2020-9330 is a high-severity vulnerability in Xerox Workcentre 3655, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2020-02-21.

How severe is CVE-2020-9330?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Xerox Workcentre 3655

CVE-2020-9330

Certain Xerox WorkCentre printers before 073.xxx.000.02300 do not require the user to reenter or validate LDAP bind credentials when changing the LDAP connector IP address. A malicious actor who gains access to affected devices (e.g., by using default credentials) can change the LDAP connection IP address to a system owned by the actor without knowledge of the LDAP bind credentials. After changing the LDAP connection IP address, subsequent authentication attempts will result in the printer sending plaintext LDAP (Active Directory) credentials to the actor. Although the credentials may belong to a non-privileged user, organizations frequently use privileged service accounts to bind to Active Directory. The attacker gains a foothold on the Active Directory domain at a minimum, and may use the credentials to take over control of the Active Directory domain. This affects 3655*, 3655i*, 58XX*, 58XXi*, 59XX*, 59XXi*, 6655**, 6655i**, 72XX*, 72XXi*, 78XX**, 78XXi**, 7970**, 7970i**, EC7836**, and EC7856** devices.

Vulnerability class: Broken Authentication

Published 2020-02-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

securitydocs.business.xerox.com/wp-content/uploads/2020/02/cert_Security_Mini_B… (Patch, Vendor Advisory)
www.securicon.com/hackers-can-gain-active-directory-privileges-through-new-vuln… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-9330?: CVE-2020-9330 is a high-severity vulnerability in Xerox Workcentre 3655, classified under Missing Authentication for Critical Function. CVSS score: 8.8/10. Published 2020-02-21.
How severe is CVE-2020-9330?: High severity. CVSS v3 base score is 8.8 out of 10.