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CVE-2023-3336

TN-5900 Series User Enumeration Vulnerability

MEDIUM
5.3
CVSS Score
Published: July 5, 2023 at 09:11 AM UTC
Updated: June 17, 2026 at 06:13 AM UTC
2 products affected across 1 vendorTn 5900 FirmwareTn-5900

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

TN-5900 Series version 3.3 and prior versions is vulnearble to user enumeration vulnerability. The vulnerability may allow a remote attacker to determine whether a user is valid during password recovery through the web login page and enable a brute force attack with valid users.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tn 5900 Firmware· Moxa
95%
v ≤ 3.31.0 ≤ v ≤ 3.31.0
Tn-5900· Moxadevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://www.moxa.com/en/support/product-support/security-advisory/mpsa-230401-tn-5900-series-user-enumeration-vulnerability

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMMoxa
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-204CWE-203

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