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.
References
| Link | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-snort3-vbavuls-96UcVVed | Vendor Advisory Mitigation |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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Configuration 4 (hide)
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History
No history.
Information
Published : 2026-03-04 18:16
Updated : 2026-08-20 15:19
NVD link : CVE-2026-20054
Mitre link : CVE-2026-20054
CVE.ORG link : CVE-2026-20054
JSON object : View
Products Affected
cisco
- snort
- secure_firewall_threat_defense
- cyber_vision
- unified_threat_defense_snort_intrusion_prevention_system_engine
CWE
CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')
