Product:
Snort 3
Summary
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. A successful exploit could allow the attacker to cause the Snort 3 Detection Engine to unexpectedly restart, causing a DoS condition.
Details
| Severity | Base Score | CVE |
|---|---|---|
| MEDIUM | 5.8 | CVE-2026-20058 |
Exploitation
An attacker could exploit these vulnerabilities by sending crafted VBA data to the Snort 3 Detection Engine on the targeted device. This crafted data takes advantage of the improper error checking, leading to a crash of the detection engine.
Affected Products
- Snort 3 Detection Engine: Vulnerable to crashes due to improper error handling in VBA data processing.
Mitigation
To mitigate these vulnerabilities, it is recommended to apply any available patches from Cisco and ensure that the Snort 3 Detection Engine is configured to handle VBA data securely. Regular updates and monitoring for unusual activity can also help prevent exploitation.