CVE-2024-20435

Root command execution via insufficient CLI validation

Published Jul 17, 2024 · Updated Aug 1, 2024

Command injection in Cisco AsyncOS for Secure Web Appliance allows local users with guest credentials to execute commands as root. The appliance CLI insufficiently validates user-supplied command input before passing a crafted command to the underlying operating system. Successful exploitation requires local CLI authentication with at least guest credentials and grants full root-level command execution.

CVSS severity8.8
High
EPSS probability0.16%
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 AsyncOS for Secure Web Appliance allows local users with guest credentials to execute commands as root. The appliance CLI insufficiently validates user-supplied command input before passing a crafted command to the underlying operating system. Successful exploitation requires local CLI authentication with at least guest credentials and grants full root-level command execution.

The record

CVE
CVE-2024-20435
Published
Jul 17, 2024
Updated
Aug 1, 2024
Vendor
ClamAV
Product
Cisco Secure Web Appliance
Classifications
CWE-250, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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=11.7.0-406
  2. Affected versionversion=11.7.0-418
  3. Affected versionversion=11.7.1-006
  4. Affected versionversion=11.7.1-020
  5. Affected versionversion=11.7.1-049
  6. Affected versionversion=11.7.2-011
  7. Affected versionversion=11.8.0-414
  8. Affected versionversion=11.8.1-023
  9. Affected versionversion=11.8.3-018
  10. Affected versionversion=11.8.3-021
  11. Affected versionversion=12.0.1-268
  12. Affected versionversion=12.0.3-007
  13. Affected versionversion=12.5.1-011
  14. Affected versionversion=12.5.2-007
  15. Affected versionversion=12.5.4-005
  16. Affected versionversion=12.5.5-004
  17. Affected versionversion=12.5.6-008
  18. Affected versionversion=14.0.2-012
  19. Affected versionversion=14.0.3-014
  20. Affected versionversion=14.0.4-005
  21. Affected versionversion=14.0.5-007
  22. Affected versionversion=14.5.0-498
  23. Affected versionversion=14.5.1-016
  24. Affected versionversion=14.5.2-011
  25. Affected versionversion=15.0.0-322
  26. Affected versionversion=15.0.0-355
  27. Affected versionversion=15.1.0-287

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Secure Web Applianceversion=11.7.0-406; version=11.7.0-418; version=11.7.1-006; version=11.7.1-020; version=11.7.1-049; version=11.7.2-011; version=11.8.0-414; version=11.8.1-023; version=11.8.3-018; version=11.8.3-021; version=12.0.1-268; version=12.0.3-007; version=12.5.1-011; version=12.5.2-007; version=12.5.4-005; version=12.5.5-004; version=12.5.6-008; version=14.0.2-012; version=14.0.3-014; version=14.0.4-005; version=14.0.5-007; version=14.5.0-498; version=14.5.1-016; version=14.5.2-011; version=15.0.0-322; version=15.0.0-355; version=15.1.0-287

Published CVSS scores

8.8Cisco Systems, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-250Execution with Unnecessary Privileges
T1068Exploitation for Privilege Escalation

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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