Multiple Cisco Products Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability
A vulnerability in the Snort 3 Visual Basic for Applications (VBA) Decompression Engine of multiple Cisco products could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper range checking when Snort 3 decompresses VBA data, which is user controlled. An attacker could exploit this vulnerability by sending crafted VBA data to the Snort 3 Detection Engine of a targeted device. A successful exploit could allow the attacker to cause an overflow of stack data, which could result in a DoS condition. Cisco has released software updates that address this vulnera
Read at Cisco PSIRT Security Advisories
- Vendor
- Cisco
- Product
- Snort
- EPSS
- 0.006 (p50)
- Fix
- available
- Exposure class
- Endpoint security
Why it ranks 36 (Notable)
- Product class: endpoint security
- Widely deployed vendor product (Cisco)
- Covered by 3 independent sources
- Fix available
- Vendor security advisory
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- Cisco PSIRT Security Advisories (sec.cloudapps.cisco.com)
- CVE-2026-20218 on this site · NVD · CVE.org · Vulnpedia
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