CVE-2023-20167Network attack vector

Administrator file disclosure via crafted HTTP request

Published May 18, 2023 · Updated Oct 28, 2024

Path traversal in Cisco Identity Services Engine allows remote authenticated users with Administrator privileges to read specific local files. The web-based management interface fails to validate user-supplied input in a crafted HTTP request before resolving file paths. Administrator-level access is required, and successful exploitation exposes arbitrary files of specific types from the appliance operating system.

CVSS severity4.9
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Cisco Identity Services Engine allows remote authenticated users with Administrator privileges to read specific local files. The web-based management interface fails to validate user-supplied input in a crafted HTTP request before resolving file paths. Administrator-level access is required, and successful exploitation exposes arbitrary files of specific types from the appliance operating system.

The record

CVE
CVE-2023-20167
Published
May 18, 2023
Updated
Oct 28, 2024
Vendor
ClamAV
Product
Cisco Identity Services Engine
Classifications
CWE-22, CWE-24, T1005
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

4.9NISTCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.9Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-24Path Traversal: '../filedir'
T1005Data from Local System

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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