Cisco CVE-2026-20058
MEDIUMCVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Lifecycle Timeline
2DescriptionNVD
Multiple Cisco products are affected by vulnerabilities in the Snort 3 VBA feature that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to crash.
These vulnerabilities are due to improper error checking when decompressing VBA data. An attacker could exploit these vulnerabilities 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 unexpectedly restart, causing a DoS condition.
AnalysisAI
Snort 3 Detection Engine crashes when processing malformed VBA data due to improper decompression error handling, allowing unauthenticated remote attackers to trigger denial-of-service conditions across multiple Cisco products. An attacker can exploit this vulnerability by sending crafted VBA payloads to cause unexpected engine restarts without requiring authentication or user interaction. …
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
Sign in for detailed remediation steps.
Share
External POC / Exploit Code
Leaving vuln.today