CVE-2026-20218Medium· 5.8▾ SunlitA 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 i…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 31.9 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 23.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.4%
0.4% → 0.6%
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.
open_source_snort3 3.12.2.0open_source_snort3 3.1.2.0open_source_snort3 3.1.3.0open_source_snort3 3.1.4.0open_source_snort3 3.1.5.0open_source_snort3 3.1.6.0open_source_snort3 3.1.7.0open_source_snort3 3.1.8.0open_source_snort3 3.1.9.0open_source_snort3 3.1.10.0open_source_snort3 3.1.12.0open_source_snort3 3.1.13.0open_source_snort3 3.1.14.0open_source_snort3 3.1.15.0open_source_snort3 3.1.16.0open_source_snort3 3.1.17.0open_source_snort3 3.1.18.0open_source_snort3 3.1.19.0open_source_snort3 3.1.20.0open_source_snort3 3.1.21.0open_source_snort3 3.1.22.0open_source_snort3 3.1.23.0open_source_snort3 3.1.24.0open_source_snort3 3.1.25.0open_source_snort3 3.1.27.0open_source_snort3 3.1.28.0open_source_snort3 3.1.29.0open_source_snort3 3.1.30.0open_source_snort3 3.1.31.0open_source_snort3 3.1.32.0open_source_snort3 3.1.36.0open_source_snort3 3.1.38.0open_source_snort3 3.1.39.0open_source_snort3 3.1.40.0open_source_snort3 3.1.41.0open_source_snort3 3.1.42.0open_source_snort3 3.1.43.0open_source_snort3 3.1.45.0open_source_snort3 3.1.47.0open_source_snort3 3.1.48.0open_source_snort3 3.1.50.0open_source_snort3 3.1.51.0open_source_snort3 3.1.52.0open_source_snort3 3.1.53.0open_source_snort3 3.1.55.0open_source_snort3 3.1.56.0open_source_snort3 3.1.57.0open_source_snort3 3.1.58.0open_source_snort3 3.1.59.0open_source_snort3 3.1.60.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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