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Vulnerability record · CVE-2021-39289 · published 23 August 2021

CVE-2021-39289: Netmodule router software insufficiently protected credentials vulnerability

Netmodule · Netmodule Router Software

Certain NetModule devices have Insecure Password Handling (cleartext or reversible encryption), These models with firmware before 4.3.0.113, 4.4.0.111, and 4.5.0.105 are affected: NB800, NB1600, NB1601, NB1800, NB1810, NB2700, NB2710, NB2800, NB2810, NB3700, NB3701, NB3710, NB3711, NB3720, and NB3800.

7.5 CVSS 3.1 High EPSS 1.1% · top 36.3% CWE-522 · Insufficiently protected credentials
7.5CVSS 3.1 base score, v2 5.0
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Certain NetModule devices have Insecure Password Handling (cleartext or reversible encryption), These models with firmware before 4.3.0.113, 4.4.0.111, and 4.5.0.105 are affected: NB800, NB1600, NB1601, NB1800, NB1810, NB2700, NB2710, NB2800, NB2810, NB3700, NB3701, NB3710, NB3711, NB3720, and NB3800.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/fulldisclosure/2021/Aug/22 ExploitMailing ListThird Party Advisory
https://www.netmodule.com Vendor Advisory
http://seclists.org/fulldisclosure/2021/Aug/22 ExploitMailing ListThird Party Advisory
https://www.netmodule.com Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-39290Netmodule router software vulnerabilityCertain NetModule devices allow Limited Session Fixation via PHPSESSID. These models with firmware before 4.3.0.113, 4.4.0.111, and 4.5.0.105 are aff…EPSS 1.5%8.8CVE-2023-0862Netmodule router software path traversal vulnerabilityThe NetModule NSRW web administration interface is vulnerable to path traversals, which could lead to arbitrary file uploads and deletion. By uploadi…EPSS 2.4%8.8CVE-2023-0861Netmodule router software command injection vulnerabilityNetModule NSRW web administration interface executes an OS command constructed with unsanitized user input. A successful exploit could allow an authe…EPSS 29%8.8CVE-2021-39291Netmodule router software sensitive information in log file vulnerabilityCertain NetModule devices allow credentials via GET parameters to CLI-PHP. These models with firmware before 4.3.0.113, 4.4.0.111, and 4.5.0.105 are …EPSS 1.5%6.6CVE-2023-46306Netmodule router software os command injection vulnerabilityThe web administration interface in NetModule Router Software (NRSW) 4.6 before 4.6.0.106 and 4.8 before 4.8.0.101 executes an OS command constructed…EPSS 0.96%9.8CVE-2021-22681Rockwell Logix Designer authentication bypass via weak key verificationRockwell Automation Studio 5000 Logix Designer (v21+) and RSLogix 5000 (v16-20) rely on a key to verify that Logix controllers are talking to genuine…KEVEPSS 64%analysed9.8CVE-2021-30116Kaseya VSA credential disclosure via unauthenticated download pageKaseya VSA before 9.5.7 exposes an unauthenticated download page (dl.asp) that leaks agent credentials and accepts them via GET request. An attacker …KEVEPSS 86%analysed9.8CVE-2020-29583Zyxel USG and ATP firmware hard-coded admin credentialZyxel USG and ATP firmware version 4.60 ships an undocumented account (zyfwp) whose password is stored in cleartext in the firmware and cannot be cha…KEVEPSS 90%analysed

Source: NIST National Vulnerability Database (record CVE-2021-39289), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.