Buffer Handling Vulnerability in Cisco's Snort 3 Detection Engine
CVE-2026-20026

5.8MEDIUM

Key Information:

Vendor

Cisco
Status
Cisco Secure Firewall Threat Defense (ftd) Software
Cisco Utd Snort Ips Engine Software
Vendor
CVE Published:
7 January 2026

Badges

👾 Exploit Exists

What is CVE-2026-20026?

Multiple Cisco products are vulnerable due to flawed buffer handling when processing DCE/RPC requests. An unauthenticated, remote attacker can exploit this flaw to trigger a use-after-free condition, enabling them to send numerous DCE/RPC requests that could lead to sensitive information leaks or unexpectedly restart the Snort 3 Detection Engine, causing potential denial of service interruptions.

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Affected Version(s)

Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0

Cisco Secure Firewall Threat Defense (FTD) Software 7.0.0.1

Cisco Secure Firewall Threat Defense (FTD) Software 7.0.1

References

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

CVSS V3.1

Score:
5.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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