CVE-2026-20057
Last modified
CVE-2026-20057 is a medium-severity vulnerability rated 5.8/10 on the CVSS scale. 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. EPSS estimates a 0.43% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Snort | >= 3.0.0-233, < 3.9.3.0 |
| Cisco | Cyber Vision | 3.0.0 |
| Cisco | Cyber Vision | 3.0.1 |
| Cisco | Cyber Vision | 3.0.2 |
| Cisco | Cyber Vision | 3.0.3 |
| Cisco | Cyber Vision | 3.0.4 |
| Cisco | Cyber Vision | 3.0.5 |
| Cisco | Cyber Vision | 3.0.6 |
| Cisco | Cyber Vision | 3.1.0 |
| Cisco | Cyber Vision | 3.1.1 |
| Cisco | Cyber Vision | 3.1.2 |
| Cisco | Cyber Vision | 3.2.0 |
| Cisco | Cyber Vision | 3.2.1 |
| Cisco | Cyber Vision | 3.2.2 |
| Cisco | Cyber Vision | 3.2.3 |
| Cisco | Cyber Vision | 3.2.4 |
| Cisco | Cyber Vision | 4.0.0 |
| Cisco | Cyber Vision | 4.0.1 |
| Cisco | Cyber Vision | 4.0.2 |
| Cisco | Cyber Vision | 4.0.3 |
| Cisco | Cyber Vision | 4.1.0 |
| Cisco | Cyber Vision | 4.1.1 |
| Cisco | Cyber Vision | 4.1.2 |
| Cisco | Cyber Vision | 4.1.3 |
| Cisco | Cyber Vision | 4.1.4 |
| Cisco | Cyber Vision | 4.1.5 |
| Cisco | Cyber Vision | 4.1.6 |
| Cisco | Cyber Vision | 4.1.7 |
| Cisco | Cyber Vision | 4.2.0 |
| Cisco | Cyber Vision | 4.2.1 |
| Cisco | Cyber Vision | 4.2.2 |
| Cisco | Cyber Vision | 4.2.3 |
| Cisco | Cyber Vision | 4.2.4 |
| Cisco | Cyber Vision | 4.2.6 |
| Cisco | Cyber Vision | 4.3.0 |
| Cisco | Cyber Vision | 4.3.1 |
| Cisco | Cyber Vision | 4.3.2 |
| Cisco | Cyber Vision | 4.3.3 |
| Cisco | Cyber Vision | 4.4.0 |
| Cisco | Cyber Vision | 4.4.1 |
| Cisco | Cyber Vision | 4.4.2 |
| Cisco | Cyber Vision | 4.4.3 |
| Cisco | Cyber Vision | 5.0.0 |
| Cisco | Cyber Vision | 5.0.1 |
| Cisco | Cyber Vision | 5.0.2 |
| Cisco | Cyber Vision | 5.1.0 |
| Cisco | Cyber Vision | 5.1.1 |
| Cisco | Cyber Vision | 5.1.2 |
| Cisco | Cyber Vision | 5.1.3 |
| Cisco | Cyber Vision | 5.2.0 |
Showing 50 of 117 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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