How severe is CVE-2021-35047?

CVE-2021-35047 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-35047 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-35047?

CVE-2021-35047 primarily affects Fidelissecurity Deception. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-35047?

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-2021-35047 published?

CVE-2021-35047 was published on 2021-06-25 and last updated on 2026-06-17.

CVE-2021-35047

CVE-2021-35047 is a critical-severity vulnerability in Fidelissecurity Deception with a CVSS 3.x base score of 9.9. 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
CVSS v2: 9.0
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Fidelissecurity Deception
Published: 2021-06-25
Last modified: 2026-06-17

Description

Vulnerability in the CommandPost, Collector, and Sensor components of Fidelis Network and Deception enables an attacker with user level access to the CLI to inject root level commands into the component and neighboring Fidelis components. The vulnerability is present in Fidelis Network and Deception versions prior to 9.3.7 and in version 9.4. Patches and updates are available to address this vulnerability.

Frequently asked questions

What is CVE-2021-35047?: Vulnerability in the CommandPost, Collector, and Sensor components of Fidelis Network and Deception enables an attacker with user level access to the CLI to inject root level commands into the component and neighboring Fidelis components. The vulnerability is present in Fidelis Network and Deception versions prior to 9.3.7 and in version 9.4. Patches and updates are available to address this vulnerability.
How severe is CVE-2021-35047?: CVE-2021-35047 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-35047 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-35047?: CVE-2021-35047 primarily affects Fidelissecurity Deception. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-35047?: 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-2021-35047 published?: CVE-2021-35047 was published on 2021-06-25 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:fidelissecurity:deception:*:*:*:*:*:*:*:*
cpe:2.3:a:fidelissecurity:deception:9.4:*:*:*:*:*:*:*
cpe:2.3:a:fidelissecurity:network:*:*:*:*:*:*:*:*
cpe:2.3:a:fidelissecurity:network:9.4:*:*:*:*:*:*:*

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