CVE-2023-20071Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker…

Description

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.

Timeline

Scores

EPSS (exploitation in 30 days)

0.68% · top 47% of all CVEs (12 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.

Affected products

• Cisco · Cisco Firepower Threat Defense Software

  • affected 6.2.3
  • affected 6.2.3.1
  • affected 6.2.3.2
  • affected 6.2.3.3
  • affected 6.2.3.4
  • affected 6.2.3.5
  • affected 6.2.3.6
  • affected 6.2.3.7
  • affected 6.2.3.8
  • affected 6.2.3.10
  • affected 6.2.3.11
  • affected 6.2.3.9
  • affected 6.2.3.12
  • affected 6.2.3.13
  • affected 6.2.3.14
  • affected 6.2.3.15
  • affected 6.2.3.16
  • affected 6.2.3.17
  • affected 6.2.3.18
  • affected 6.6.0
  • affected 6.6.0.1
  • affected 6.6.1
  • affected 6.6.3
  • affected 6.6.4
  • affected 6.6.5
  • affected 6.6.5.1
  • affected 6.6.5.2
  • affected 6.6.7
  • affected 6.6.7.1
  • affected 6.4.0
  • affected 6.4.0.1
  • affected 6.4.0.3
  • affected 6.4.0.2
  • affected 6.4.0.4
  • affected 6.4.0.5
  • affected 6.4.0.6
  • affected 6.4.0.7
  • affected 6.4.0.8
  • affected 6.4.0.9
  • affected 6.4.0.10
  • and 31 more

• Cisco · Cisco Umbrella Insights Virtual Appliance

  • affected N/A

• Cisco · Cisco Cyber Vision

  • affected 3.0.4
  • affected 3.0.0
  • affected 3.0.1
  • affected 3.0.2
  • affected 3.0.3
  • affected 3.0.5
  • affected 3.0.6
  • affected 3.1.0
  • affected 3.1.2
  • affected 3.1.1
  • affected 3.2.3
  • affected 3.2.1
  • affected 3.2.4
  • affected 3.2.0
  • affected 3.2.2
  • affected 4.0.0
  • affected 4.0.1
  • affected 4.0.2
  • affected 4.0.3
  • affected 4.1.0
  • affected 4.1.1
  • affected 4.1.2

• Cisco · Cisco UTD SNORT IPS Engine Software

  • affected 16.12.1a
  • affected 16.12.2
  • affected 16.12.3
  • affected 16.12.4
  • affected 16.12.5
  • affected 16.12.6
  • affected 16.12.7
  • affected 16.12.8
  • affected 16.6.1
  • affected 16.6.5
  • affected 16.6.6
  • affected 16.6.7a
  • affected 16.6.9
  • affected 16.6.10
  • affected 17.1.1
  • affected 17.2.1r
  • affected 17.3.1a
  • affected 17.3.2
  • affected 17.3.3
  • affected 17.3.4a
  • affected 17.3.6
  • affected 17.3.5
  • affected 17.3.7
  • affected 3.17.0S
  • affected 3.17.1S
  • affected 17.4.1a
  • affected 17.4.2
  • affected 17.4.1b
  • affected 17.5.1a
  • affected 17.6.1a
  • affected 17.6.2
  • affected 17.6.3a
  • affected 17.6.4
  • affected 17.6.5
  • affected 17.7.1a
  • affected 17.7.2
  • affected 17.10.1a
  • affected 17.9.1a
  • affected 17.9.2a
  • affected 17.9.3a
  • and 16 more

What to do

Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2023-24250 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2023-20071](https://cveledger.app/badge/CVE-2023-20071.svg)](https://cveledger.app/cve/CVE-2023-20071)

Record last updated 2 Aug 2024, 08:57 UTC.