CVE-2024-20528Network attack vector

Root code execution via unvalidated API paths

Published Nov 6, 2024 · Updated Nov 6, 2024

Path traversal in affected Cisco Identity Services Engine 3.1, 3.2, and 3.3 releases allows remote authenticated users to upload files via its API. The API fails to validate user-supplied path parameters and writes uploaded content to attacker-chosen operating-system locations. Valid Super Admin credentials are required; successful exploitation supports arbitrary code execution and root privilege escalation.

CVSS severity3.8
Low
EPSS probability0.61%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in affected Cisco Identity Services Engine 3.1, 3.2, and 3.3 releases allows remote authenticated users to upload files via its API. The API fails to validate user-supplied path parameters and writes uploaded content to attacker-chosen operating-system locations. Valid Super Admin credentials are required; successful exploitation supports arbitrary code execution and root privilege escalation.

The record

CVE
CVE-2024-20528
Published
Nov 6, 2024
Updated
Nov 6, 2024
Vendor
ClamAV
Product
Cisco Identity Services Engine
Classifications
CWE-22, T1105
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.1.0
  2. Affected versionversion=3.1.0 p1
  3. Affected versionversion=3.1.0 p2
  4. Affected versionversion=3.1.0 p3
  5. Affected versionversion=3.1.0 p4
  6. Affected versionversion=3.1.0 p5
  7. Affected versionversion=3.1.0 p6
  8. Affected versionversion=3.1.0 p7
  9. Affected versionversion=3.1.0 p8
  10. Affected versionversion=3.1.0 p9
  11. Affected versionversion=3.2.0
  12. Affected versionversion=3.2.0 p1
  13. Affected versionversion=3.2.0 p2
  14. Affected versionversion=3.2.0 p3
  15. Affected versionversion=3.2.0 p4
  16. Affected versionversion=3.2.0 p5
  17. Affected versionversion=3.2.0 p6
  18. Affected versionversion=3.3.0
  19. Affected versionversion=3.3 Patch 1
  20. Affected versionversion=3.3 Patch 2
  21. Affected versionversion=3.3 Patch 3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ClamAV · Cisco Identity Services Engineversion=3.1.0; version=3.1.0 p1; version=3.1.0 p2; version=3.1.0 p3; version=3.1.0 p4; version=3.1.0 p5; version=3.1.0 p6; version=3.1.0 p7; version=3.1.0 p8; version=3.1.0 p9; version=3.2.0; version=3.2.0 p1; version=3.2.0 p2; version=3.2.0 p3; version=3.2.0 p4; version=3.2.0 p5; version=3.2.0 p6; version=3.3.0; version=3.3 Patch 1; version=3.3 Patch 2; version=3.3 Patch 3

Published CVSS scores

7.2NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.8Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/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 11, 2026Sep 17, 2026
Latest reporting daySep 17, 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')
T1105Ingress Tool Transfer

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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