How severe is CVE-2021-35203?

CVE-2021-35203 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-35203 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-2021-35203?

CVE-2021-35203 affects Netscout Ngeniusone. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-35203?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-35203 published?

CVE-2021-35203 was published on 2021-09-30 and last updated on 2026-06-17.

CVE-2021-35203

CVE-2021-35203 is a medium-severity vulnerability in Netscout Ngeniusone with a CVSS 3.x base score of 5.7. 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-552.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
CVSS v2: 3.5
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-552
Affected product: Netscout Ngeniusone
Published: 2021-09-30
Last modified: 2026-06-17

Description

NETSCOUT Systems nGeniusONE 6.3.0 build 1196 allows Arbitrary File Read operations via the FDSQueryService endpoint.

Frequently asked questions

What is CVE-2021-35203?: NETSCOUT Systems nGeniusONE 6.3.0 build 1196 allows Arbitrary File Read operations via the FDSQueryService endpoint.
How severe is CVE-2021-35203?: CVE-2021-35203 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-35203 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-2021-35203?: CVE-2021-35203 affects Netscout Ngeniusone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-35203?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-35203 published?: CVE-2021-35203 was published on 2021-09-30 and last updated on 2026-06-17.

References

https://www.netscout.com/securityadvisories

Affected products (1)

cpe:2.3:a:netscout:ngeniusone:6.3.0:*:*:*:*:*:*:*

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