Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-20053

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 34.3%
CVSS Severity
CVSS v3 Score 5.8
Products affected by CVE-2026-20053


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