Vulnerability intelligence

CVE-2026-20043

Cisco Cisco Cyber Vision CWE-787

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20043 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.

CVSS Score

Critical

EPSS — Exploit Probability

—

Awaiting FIRST.org data · checked 2026-10-22

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

unknown

Check vendor advisories

NVD entry PoC / advisory