CVE-2026-20011
Cisco · Cisco Open Source Snort3, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco UTD SNORT IPS Engine Software
Cisco
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SECURITY ALERT
CVE
CVE-2026-20011
MediumCVSS —
VendorCisco
ProductCisco Open Source Snort3, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco UTD SNORT IPS Engine Software
Recommended action
Apply the security updates or mitigations listed in the vendor's official advisory.
Published21-10-2026
SourceCisco PSIRT
SECURE
INFRASTRUCTURE
INFRASTRUCTURE
OPTIMIZED
NETWORKS
NETWORKS
BUSINESS
CONTINUITY
CONTINUITY
TRUSTED
PARTNER
PARTNER
MANAR TECHwww.manartech.com
About this alert
A vulnerability tracked as CVE-2026-20011 affects Cisco Open Source Snort3, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco UTD SNORT IPS Engine Software from Cisco. Severity: Medium. Organizations running the affected product should review the official advisory and apply the recommended action.
- Severity
- Medium
- CVSS
- Not yet rated
- Vendor
- Cisco
- Product
- Cisco Open Source Snort3, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco UTD SNORT IPS Engine Software
- Published
- 21-10-2026
- Source
- Cisco PSIRT
- Recommended action
- Apply the security updates or mitigations listed in the vendor's official advisory.