Firewalls & VPN
CVE-2026-20290: Cisco Secure Firewall Threat Defense Software Snort 2 SSL/TLS Denial of Service VulnerabilityNew!!
Cisco published a Medium-rated advisory that includes CVE-2026-20290. Cisco does not separately state a CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.
CVE-2026-20295: Cisco Secure FMC Software and Secure FTD Software sftunnel Memory Exhaustion DoS VulnerabilityNew!!
Cisco published a High-rated advisory that includes CVE-2026-20295. Cisco explicitly lists a High CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.
CVE-2026-20323: Cisco Secure FMC Software and Secure FTD Software sftunnel Unauthorized Authentication Bypass VulnerabilityNew!!
Cisco published a High-rated advisory that includes CVE-2026-20323. Cisco explicitly lists a High CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.
CVE-2026-20324: Cisco Secure Firewall Management Center sftunnel Root Arbitrary Code Execution VulnerabilityNew!!
Cisco published a Critical-rated advisory that includes CVE-2026-20324. Cisco does not separately state a CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.
CVE-2024-20260: Cisco ASA and FTD SSL VPN denial-of-service scope expansionNew!!
Cisco materially revised a High-rated advisory that includes CVE-2024-20260. Cisco does not separately state a CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.
CVE-2026-20120: Cisco FTD ACL bypass vulnerabilityNew!!
Cisco published a Medium-rated advisory that includes CVE-2026-20120. Cisco does not separately state a CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.
CVE-2026-20121: Cisco FTD Bypass Access ListNew!!
Cisco published a Medium-rated advisory that includes CVE-2026-20121. Cisco does not separately state a CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.
CVE-2026-20135: Cisco Secure Firewall Threat Defense Software TLS 1.3 Denial of Service VulnerabilityNew!!
Cisco published a High-rated advisory that includes CVE-2026-20135. Cisco does not separately state a CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.
CVE-2026-20154: Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software Logging Denial of ServiceNew!!
Cisco published a High-rated advisory that includes CVE-2026-20154. Cisco does not separately state a CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.
CVE-2026-20222: Cisco Secure Firewall ASA and FTD EIGRP Denial of Service VulnerabilityNew!!
Cisco published a High-rated advisory that includes CVE-2026-20222. Cisco does not separately state a CVE-specific SIR. TechGeeks scope, action, fixed-release guidance, evidence status, and primary Cisco sources.