Multiple Cisco products are affected by vulnerabilities in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash.

These vulnerabilities are due to improper error checking when decompressing VBA data. An attacker could exploit these vulnerabilities by sending 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 DoS condition.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00094.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Cisco Cisco Secure Firewall Threat Defense (FTD) Software unknown
Version Status Constraints
7.2.0 affected
—
7.2.0.1 affected
—
7.2.1 affected
—
7.3.0 affected
—
7.2.2 affected
—
7.2.3 affected
—
7.3.1 affected
—
7.2.4 affected
—
7.2.5 affected
—
7.2.4.1 affected
—
7.3.1.1 affected
—
7.4.0 affected
—
7.2.5.1 affected
—
7.4.1 affected
—
7.2.6 affected
—
7.4.1.1 affected
—
7.2.7 affected
—
7.2.5.2 affected
—
7.3.1.2 affected
—
7.2.8 affected
—
7.6.0 affected
—
7.4.2 affected
—
7.2.8.1 affected
—
7.4.2.1 affected
—
7.2.9 affected
—
7.7.0 affected
—
7.4.2.2 affected
—
7.2.10 affected
—
7.6.1 affected
—
7.4.2.3 affected
—
7.6.2 affected
—
7.7.10 affected
—
7.6.2.1 affected
—
7.7.10.1 affected
—
7.4.2.4 affected
—
7.2.10.2 affected
—
7.4.3 affected
—
Cisco Cisco UTD SNORT IPS Engine Software unknown
Version Status Constraints
17.9.3a affected
—
17.12.1a affected
—
17.12.2 affected
—
17.13.1a affected
—
17.9.5a affected
—
17.12.3 affected
—
17.14.1a affected
—
17.12.4 affected
—
17.12.3a affected
—
17.15.1a affected
—
17.9.6 affected
—
17.16.1a affected
—
17.12.4a affected
—
17.15.2c affected
—
17.12.4b affected
—
17.15.2a affected
—
17.12.5 affected
—
17.17.1 affected
—
17.12.5a affected
—
17.15.3a affected
—
17.15.3 affected
—
17.12.5b affected
—
17.12.5c affected
—
17.15.4 affected
—
17.18.1 affected
—
17.18.1a affected
—
17.12.6 affected
—
17.15.4c affected
—
17.12.5d affected
—
17.18.2 affected
—

No data.

No data.

Vendor Product Confidence Versions
Cisco Cisco Utd Snort Ips Engine Software 100%
Version Status Scheme Platform
17.9.3a
 affected generic —
17.12.1a
 affected generic —
17.12.2
 affected semver —
17.13.1a
 affected generic —
17.9.5a
 affected generic —
17.12.3
 affected semver —
17.14.1a
 affected generic —
17.12.4
 affected semver —
17.12.3a
 affected generic —
17.15.1a
 affected generic —
17.9.6
 affected semver —
17.16.1a
 affected generic —
17.12.4a
 affected generic —
17.15.2c
 affected generic —
17.12.4b
 affected generic —
17.15.2a
 affected generic —
17.12.5
 affected semver —
17.17.1
 affected semver —
17.12.5a
 affected generic —
17.15.3a
 affected generic —
17.15.3
 affected semver —
17.12.5b
 affected generic —
17.12.5c
 affected generic —
17.15.4
 affected semver —
17.18.1
 affected semver —
17.18.1a
 affected generic —
17.12.6
 affected semver —
17.15.4c
 affected generic —
17.12.5d
 affected generic —
17.18.2
 affected semver —
Cisco Secure Firewall Threat Defense 100%
Version Status Scheme Platform
7.2.0
 affected semver —
7.2.0.1
 affected generic —
7.2.1
 affected semver —
7.3.0
 affected semver —
7.2.2
 affected semver —
7.2.3
 affected semver —
7.3.1
 affected semver —
7.2.4
 affected semver —
7.2.5
 affected semver —
7.2.4.1
 affected generic —
7.3.1.1
 affected generic —
7.4.0
 affected semver —
7.2.5.1
 affected generic —
7.4.1
 affected semver —
7.2.6
 affected semver —
7.4.1.1
 affected generic —
7.2.7
 affected semver —
7.2.5.2
 affected generic —
7.3.1.2
 affected generic —
7.2.8
 affected semver —
7.6.0
 affected semver —
7.4.2
 affected semver —
7.2.8.1
 affected generic —
7.4.2.1
 affected generic —
7.2.9
 affected semver —
7.7.0
 affected semver —
7.4.2.2
 affected generic —
7.2.10
 affected semver —
7.6.1
 affected semver —
7.4.2.3
 affected generic —
7.6.2
 affected semver —
7.7.10
 affected semver —
7.6.2.1
 affected generic —
7.7.10.1
 affected generic —
7.4.2.4
 affected generic —
7.2.10.2
 affected generic —
7.4.3
 affected semver —

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Project Subscriptions

Vendors Products
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Cisco Utd Snort Ips Engine Software Subscribe
Secure Firewall Threat Defense Subscribe
Advisories

No advisories yet.

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-ftd-snort3-vbavuls-96UcVVed cve-icon cve-icon
History

Thu, 05 Mar 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco cisco Utd Snort Ips Engine Software
Cisco secure Firewall Threat Defense
Vendors & Products Cisco
Cisco cisco Utd Snort Ips Engine Software
Cisco secure Firewall Threat Defense

Wed, 04 Mar 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 04 Mar 2026 18:00:00 +0000

Type Values Removed Values Added
Description Multiple Cisco products are affected by vulnerabilities in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. These vulnerabilities are due to improper error checking when decompressing VBA data. An attacker could exploit these vulnerabilities by sending 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 DoS condition.
Title Cisco Secure Firewall Threat Defense Software Snort 3 Visual Basic for Application Denial of Service Vulnerability
Weaknesses CWE-786
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-03-04T21:01:36.320Z

Reserved: 2025-10-08T11:59:15.356Z

Link: CVE-2026-20058

cve-icon Vulnrichment

Updated: 2026-03-04T21:01:31.281Z

cve-icon NVD

Status : Received

Published: 2026-03-04T18:16:20.643

Modified: 2026-03-04T18:16:20.643

Link: CVE-2026-20058

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-05T09:06:16Z

Weaknesses