ZDI-26-788: Cisco Snort OLE VBA Decompression Stack-based Buffer Overflow Remote Code Execution Vulnerability
Description
A stack-based buffer overflow vulnerability in Cisco Snort's OLE VBA decompression component allows remote attackers to execute arbitrary code without authentication. The vulnerability is identified as CVE-2026-20218 and has a high severity rating with a CVSS score assigned by ZDI of 8.1. No affected versions or patch information are provided in the available data.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-20218 is a remote code execution vulnerability in Cisco Snort caused by a stack-based buffer overflow during OLE VBA decompression. Exploitation does not require authentication, enabling remote attackers to execute arbitrary code on affected systems. The vulnerability was reported by the Zero Day Initiative and assigned a high CVSS score of 8.1. No technical details or patch information are currently available.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code on affected Cisco Snort installations without authentication, potentially leading to full system compromise. The high CVSS rating of 8.1 indicates significant risk, but no known exploits in the wild have been reported at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, monitor Cisco's security advisories for updates and consider applying any recommended temporary mitigations once published.
Threat ID: 6adc69445a5d48fa0da91dc4
Added to database: 10/24/2026, 08:16:04 UTC
Last enriched: 10/24/2026, 08:16:16 UTC
Last updated: 10/24/2026, 09:32:24 UTC
Views: 4
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