How severe is CVE-2023-40300?

CVE-2023-40300 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-40300 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40300?

CVE-2023-40300 affects Netscout Ngeniuspulse. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40300?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-40300 published?

CVE-2023-40300 was published on 2023-12-07 and last updated on 2026-06-17.

CVE-2023-40300

CVE-2023-40300 is a critical-severity vulnerability in Netscout Ngeniuspulse with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Netscout Ngeniuspulse
Published: 2023-12-07
Last modified: 2026-06-17

Description

NETSCOUT nGeniusPULSE 3.8 has a Hardcoded Cryptographic Key.

Frequently asked questions

What is CVE-2023-40300?: NETSCOUT nGeniusPULSE 3.8 has a Hardcoded Cryptographic Key.
How severe is CVE-2023-40300?: CVE-2023-40300 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-40300 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40300?: CVE-2023-40300 affects Netscout Ngeniuspulse. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40300?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-40300 published?: CVE-2023-40300 was published on 2023-12-07 and last updated on 2026-06-17.

References

https://www.netscout.com/securityadvisories

Affected products (1)

cpe:2.3:a:netscout:ngeniuspulse:3.8.0-0.2349.0:*:*:*:*:*:*:*

More vulnerabilities in Netscout Ngeniuspulse

CVE-2023-40301 — Critical (CVSS 9.8): NETSCOUT nGeniusPULSE 3.8 has a Command Injection Vulnerability.
CVE-2023-40302 — Critical (CVSS 9.1): NETSCOUT nGeniusPULSE 3.8 has Weak File Permissions Vulnerability

All CVEs affecting Netscout Ngeniuspulse →

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