Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00047.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Cisco Subscribe
Cyber Vision Subscribe
Firepower Threat Defense Subscribe
Meraki Mx Security Appliance Firmware Subscribe
Unified Threat Defense Subscribe
Snort Subscribe
Snort Subscribe

Configuration 1 [-]

AND
OR cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:snort:snort:2.0:-:*:*:*:*:*:*

Configuration 2 [-]

AND
OR cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:*

Configuration 3 [-]

cpe:2.3:a:cisco:cyber_vision:*:*:*:*:*:*:*:*

Configuration 4 [-]

OR cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:*

Configuration 5 [-]

cpe:2.3:o:cisco:meraki_mx_security_appliance_firmware:-:*:*:*:*:*:*:*

No data.

No data.

Advisories
Source ID Title
EUVD EUVD EUVD-2023-24250 Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload.
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-ftd-zXYtnjOM cve-icon cve-icon
History

Tue, 11 Aug 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Cisco secure Firewall Threat Defense
CPEs cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
Vendors & Products Cisco firepower Threat Defense
Cisco secure Firewall Threat Defense

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-08-02T08:57:35.845Z

Reserved: 2022-10-27T18:47:50.328Z

Link: CVE-2023-20071

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-11-01T18:15:09.090

Modified: 2026-08-11T19:37:30.880

Link: CVE-2023-20071

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses