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. 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 an overflow of heap data, which could cause 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 15:26
NVD link : CVE-2026-20053
Mitre link : CVE-2026-20053
CVE.ORG link : CVE-2026-20053
JSON object : View
Products Affected
cisco
- snort
- secure_firewall_threat_defense
- cyber_vision
- unified_threat_defense_snort_intrusion_prevention_system_engine
CWE
CWE-122
Heap-based Buffer Overflow
