Product:
Snort 3
Summary
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 range checking when decompressing VBA data, which is user controlled. A successful exploit could allow the attacker to cause an overflow of heap data, leading to a DoS condition.
Details
| Severity | Base Score | CVE |
|---|---|---|
| MEDIUM | 5.8 | CVE-2026-20053 |
Exploitation
An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine on the targeted device. By manipulating the input data, the attacker can trigger the improper range checking, resulting in a crash of the detection engine.
Affected Products
- Snort 3 Detection Engine: Vulnerable to crashes due to improper handling of VBA data.
Mitigation
To mitigate this vulnerability, users should ensure that they are using the latest version of the Snort 3 software and apply any available patches. Regular monitoring and updating of security configurations can also help reduce the risk of exploitation.