CVE-2023-20163Network attack vector

Authenticated command execution via crafted HTTP request

Published May 18, 2023 · Updated Oct 28, 2024

Command injection in Cisco Identity Services Engine allows remote authenticated users to execute operating-system commands through its web interface. The management interface insufficiently validates user input in a crafted HTTP request before passing it to operating-system command execution. Administrator-level privileges are required; commands run as the web-services user, and chaining another issue can elevate access to root.

CVSS severity6.5
Medium
EPSS probability1.19%
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 Identity Services Engine allows remote authenticated users to execute operating-system commands through its web interface. The management interface insufficiently validates user input in a crafted HTTP request before passing it to operating-system command execution. Administrator-level privileges are required; commands run as the web-services user, and chaining another issue can elevate access to root.

The record

CVE
CVE-2023-20163
Published
May 18, 2023
Updated
Oct 28, 2024
Vendor
ClamAV
Product
Cisco Identity Services Engine
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 28, 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 Identity Services Engineversion=n/a

Published CVSS scores

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.

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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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