# CVE-2026-20058

## Summary

- **CVE ID:** CVE-2026-20058
- **Severity:** MEDIUM
- **CVSS Score:** 5.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L)
- **CWE:** CWE-786
- **Published:** Mar 4, 2026
- **Last Modified:** Mar 12, 2026

## 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.

## Affected Products

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

## References

- [CNA](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3-vbavuls-96UcVVed)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 32.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._