medium5.8
CVE-2026-20058
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 De…
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Snort | from 3.0.0-233 before 3.9.6.0 |
| Cisco | Secure Firewall Threat Defense | Versions 7.2.0, 7.2.0.1, 7.2.1, 7.2.2, 7.2.3, 7.2.4 |
| Cisco | Unified Threat Defense Snort Intrusion Prevention System Engine | Versions 17.9.3a, 17.9.5a, 17.9.6, 17.12.1a, 17.12.2, 17.12.3 |