CVE-2021-1618Network attack vector

Root command execution via insufficient input validation

Published Jul 22, 2021 · Updated Nov 7, 2024

Command injection in Cisco Intersight Virtual Appliance before 1.0.9-292 allows remote authenticated users to execute commands as root. The web-based management interface fails to validate crafted command input before processing it as an operating-system command. An account with high privileges can reach the interface and gain root-level command execution without reported service interruption.

CVSS severity6.5
Medium
EPSS probability2.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Cisco Intersight Virtual Appliance before 1.0.9-292 allows remote authenticated users to execute commands as root. The web-based management interface fails to validate crafted command input before processing it as an operating-system command. An account with high privileges can reach the interface and gain root-level command execution without reported service interruption.

The record

CVE
CVE-2021-1618
Published
Jul 22, 2021
Updated
Nov 7, 2024
Vendor
ClamAV
Product
Cisco Intersight Virtual Appliance
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ClamAV · Cisco Intersight Virtual Applianceversion=n/a

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A:C
6.5CiscoCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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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