medium5.8
CVE-2026-20054
Multiple Cisco products are affected by a vulnerability 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 a vulnerability in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash. This vulnerability is due to improper error checking when decompressing VBA data. An attacker could exploit this vulnerability 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 enter an infinite loop, causing a DoS condition.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Snort | from 3.0.0-233 before 3.9.3.0 |
| Cisco | Cyber Vision | Versions 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5 |
| 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 3.17.0s, 3.17.1s, 16.6.1, 16.6.5, 16.6.6, 16.6.7a |