Riskcovery

CVE-2026-20057

Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Denial of Service Vulnerability

State
Published
Severity
5.8 Medium
Published
Mar 4, 2026
Updated
Mar 4, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

Description

Multiple Cisco products are affected by a vulnerability in the Snort 3 Visual Basic for Applications (VBA) feature which could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash.    This vulnerability is due to lack of proper error checking when decompressing VBA data. An attacker could exploit this vulnerability by sending a crafted VBA data to the Snort 3 Detection Engine on the targeted device. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to unexpectedly restart causing a a denial of service (DoS) condition.

Scores

CVSSScoreVectorSource
3.15.8 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Lcisco

Weaknesses

Affected Products

ProductVersions
Cisco Cyber VisionCisco
  • 3.0.0Affected
  • 3.0.2Affected
  • 3.0.3Affected
  • 3.0.1Affected
  • 3.1.0Affected
  • 3.0.4Affected
  • 3.1.1Affected
  • 3.1.2Affected
  • 3.2.0Affected
  • 3.0.5Affected
  • 3.2.1Affected
  • 3.0.6Affected
  • 3.2.2Affected
  • 3.2.3Affected
  • 3.2.4Affected
  • 4.0.0Affected
  • 4.0.1Affected
  • 4.0.2Affected
  • 4.0.3Affected
  • 4.1.0Affected
  • 4.1.1Affected
  • 4.1.2Affected
  • 4.1.3Affected
  • 4.1.4Affected
  • 4.2.0Affected
  • and 28 more versions
Cisco Secure Firewall Threat Defense (FTD) SoftwareCisco
  • 7.2.0Affected
  • 7.2.0.1Affected
  • 7.2.1Affected
  • 7.3.0Affected
  • 7.2.2Affected
  • 7.2.3Affected
  • 7.3.1Affected
  • 7.2.4Affected
  • 7.2.5Affected
  • 7.2.4.1Affected
  • 7.3.1.1Affected
  • 7.4.0Affected
  • 7.2.5.1Affected
  • 7.4.1Affected
  • 7.2.6Affected
  • 7.4.1.1Affected
  • 7.2.7Affected
  • 7.2.5.2Affected
  • 7.3.1.2Affected
  • 7.2.8Affected
  • 7.6.0Affected
  • 7.4.2Affected
  • 7.2.8.1Affected
  • 7.4.2.1Affected
  • 7.2.9Affected
  • and 12 more versions
Cisco UTD SNORT IPS Engine SoftwareCisco
  • 17.12.1aAffected
  • 17.12.2Affected
  • 17.13.1aAffected
  • 17.12.3Affected
  • 17.14.1aAffected
  • 17.12.4Affected
  • 17.12.3aAffected
  • 17.15.1aAffected
  • 17.16.1aAffected
  • 17.12.4aAffected
  • 17.15.2cAffected
  • 17.12.4bAffected
  • 17.15.2aAffected
  • 17.12.5Affected
  • 17.17.1Affected
  • 17.12.5aAffected
  • 17.15.3aAffected
  • 17.15.3Affected
  • 17.12.5bAffected
  • 17.12.5cAffected
  • 17.15.4Affected
  • 17.18.1Affected
  • 17.18.1aAffected
  • 17.12.6Affected
  • 17.15.4cAffected
  • and 2 more versions

References

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