CVE-2024-20429Network attack vector

Root command execution via server-side template injection

Published Jul 17, 2024 · Updated Aug 1, 2024

Server-side template injection in Cisco Secure Email Gateway allows remote authenticated users to execute operating-system commands as root. The web management interface fails to neutralize template syntax in crafted HTTP request data before server-side evaluation. Valid Operator credentials are required; successful exploitation permits root-level command execution but has no reported availability impact.

CVSS severity6.5
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side template injection in Cisco Secure Email Gateway allows remote authenticated users to execute operating-system commands as root. The web management interface fails to neutralize template syntax in crafted HTTP request data before server-side evaluation. Valid Operator credentials are required; successful exploitation permits root-level command execution but has no reported availability impact.

The record

CVE
CVE-2024-20429
Published
Jul 17, 2024
Updated
Aug 1, 2024
Vendor
ClamAV
Product
Cisco Secure Email
Classifications
CWE-74, T1059
Attack vector
network
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=11.0.3-238
  2. Affected versionversion=11.1.0-069
  3. Affected versionversion=11.1.0-128
  4. Affected versionversion=11.1.0-131
  5. Affected versionversion=12.0.0-419
  6. Affected versionversion=12.1.0-071
  7. Affected versionversion=12.1.0-087
  8. Affected versionversion=12.1.0-089
  9. Affected versionversion=12.5.0-066
  10. Affected versionversion=12.5.3-041
  11. Affected versionversion=12.5.4-041
  12. Affected versionversion=13.0.0-392
  13. Affected versionversion=13.0.5-007
  14. Affected versionversion=13.5.1-277
  15. Affected versionversion=13.5.4-038
  16. Affected versionversion=14.0.0-698
  17. Affected versionversion=14.2.0-620
  18. Affected versionversion=14.2.1-020

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Secure Emailversion=11.0.3-238; version=11.1.0-069; version=11.1.0-128; version=11.1.0-131; version=12.0.0-419; version=12.1.0-071; version=12.1.0-087; version=12.1.0-089; version=12.5.0-066; version=12.5.3-041; version=12.5.4-041; version=13.0.0-392; version=13.0.5-007; version=13.5.1-277; version=13.5.4-038; version=14.0.0-698; version=14.2.0-620; version=14.2.1-020

Published CVSS scores

6.5Cisco Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X
7.2NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:H/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('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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