CVE-2026-20043

Summary

Out-of-bounds write vulnerability in Cisco Snort 3 allowing memory corruption during packet processing, potentially leading to system compromise.

Exploitability

Exploitation requires high skill and specific conditions due to the CVSS attack complexity of HIGH; no public exploit code is available.

Blast radius

Successful exploitation could enable remote code execution, data exfiltration, or service disruption on affected Snort 3 deployments.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Upgrade to Cisco Snort 3 version 2.590 or later, as this is the fixed version released in response to the internal security review.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.