Privileged Command Injection Vulnerability in Fidelis Network and Deception

published 2021-06-25 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21692

cvss: 9.9; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits: 0; none known

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.

Patch / fix

fixed in 2

Fidelis Cybersecurity Fidelis Network 9.3.7
Fidelis Cybersecurity Fidelis Deception 9.3.7

Exploit prediction

1.64% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

securifera.com https://www.securifera.com/blog/2021/06/24/operation-eagle-eye/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	9.0	AV:N/AC:L/Au:S/C:C/I:C/A:C

Affected products

Fidelis Cybersecurity Fidelis Network
Fidelis Cybersecurity Fidelis Deception

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

securifera.com /blog/2021/06/24/operation-eagle-eye/
exploit, third-party-advisory
support.fidelissecurity.com /hc/en-us/categories/360001842694-Advisories-News-and-Policies
permissions-required, vendor-advisory

Sources

CVE List CVE-2021-35047
NVD CVE-2021-35047

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary