CVE-2026-20057
Multiple Cisco products are affected by a vulnerability in the Snort 3 Visual Basic for Applications (VBA) feature which could allow an unauthenticated, remote…
Impact
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.
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 17.12.1a, 17.12.2, 17.12.3, 17.12.3a, 17.12.4, 17.12.4a |