CVE-2023-40300Network attack vector

Unauthenticated access via hard-coded cryptographic key

Published Dec 7, 2023 · Updated Oct 9, 2024

Hard-coded cryptographic key use in NETSCOUT nGeniusPULSE 3.8 allows remote attackers to gain unauthorized access over a network. NETSCOUT has not disclosed where the key is embedded, how it is exposed, or which authentication or cryptographic operation accepts it. No authentication or user interaction is required, but public sources do not identify the exact data access, privilege, or service effects enabled by the key.

CVSS severity9.8
Critical
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded cryptographic key use in NETSCOUT nGeniusPULSE 3.8 allows remote attackers to gain unauthorized access over a network. NETSCOUT has not disclosed where the key is embedded, how it is exposed, or which authentication or cryptographic operation accepts it. No authentication or user interaction is required, but public sources do not identify the exact data access, privilege, or service effects enabled by the key.

The record

CVE
CVE-2023-40300
Published
Dec 7, 2023
Updated
Oct 9, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-798, T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 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

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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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