Incorrect Calculation Vulnerability in Cisco's Open Source Snort 3 Software
CVE-2026-20236

7.5HIGH

Key Information:

Vendor

Cisco
Status
Cisco Cyber Vision
Cisco Open Source Snort3
Cisco Secure Firewall Threat Defense (ftd) Software
Cisco Utd Snort Ips Engine Software
Vendor
CVE Published:
21 October 2026

Badges

👾 Exploit Exists

What is CVE-2026-20236?

The vulnerabilities identified in Cisco's Open Source Snort 3 Software stem from issues related to incorrect calculations. Following a thorough internal security review, the Cisco engineering team has implemented software hardening changes to address potential security risks associated with these vulnerabilities. As part of an effort to strengthen product integrity, these enhancements focus on rectifying specific weaknesses categorized under the Common Weakness Enumeration, specifically CWE-682.

Affected Version(s)

Cisco Cyber Vision 3.0.0

Cisco Cyber Vision 3.0.2

Cisco Cyber Vision 3.0.3

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.