CVE-2021-39289Public exploitNetwork attack vector

Credential disclosure via cleartext and static-key storage

Published Aug 23, 2021 · Updated Aug 4, 2024

Credential disclosure in NetModule Router Software before 4.3.0.113, 4.4.0.111, or 4.5.0.105 allows remote attackers to read passwords. The certificates page returns its passphrase in cleartext, while exported configuration files encrypt passwords with Blowfish-CBC using a fixed key and initialization vector. User-password storage is optional, but certificate-passphrase exposure is unavoidable; recovered credentials enable access to affected device accounts.

CVSS severity7.5
High
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Credential disclosure in NetModule Router Software before 4.3.0.113, 4.4.0.111, or 4.5.0.105 allows remote attackers to read passwords. The certificates page returns its passphrase in cleartext, while exported configuration files encrypt passwords with Blowfish-CBC using a fixed key and initialization vector. User-password storage is optional, but certificate-passphrase exposure is unavoidable; recovered credentials enable access to affected device accounts.

The record

CVE
CVE-2021-39289
Published
Aug 23, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-522, T1552.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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