# Cisco Secure Access vulnerabilities Source: https://junglewise.ai/threats/technologies/cisco-secure-access Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 11 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/cisco-secure-access.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 4 vulnerabilities in Cisco Secure Access: 0 in the last 7 days and 4 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-20356, was published on 21 October 2026. 4 vulnerabilities in the last four weeks, up from none in the four before. 1 critical against 0. ## Counts - Last 7 days: 0 - Last 30 days: 4 - Last 90 days: 4 - All time: 4 (1 critical, 0 exploited in the wild) ## About Cisco Secure Access Cloud-delivered network access control and identity-based security platform. ## Latest Cisco Secure Access vulnerabilities - [CVE-2026-20356: Cisco Snort 3 uncontrolled resource consumption](https://junglewise.ai/threats/cve-2026-20356-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and) (high, CVSS 7.5, published 21 Oct 2026) - [CVE-2026-20291: Cisco Snort 3 improper privilege management](https://junglewise.ai/threats/cve-2026-20291-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and) (high, CVSS 7.8, published 21 Oct 2026) - [CVE-2026-20236: Cisco Snort 3 incorrect calculation vulnerability](https://junglewise.ai/threats/cve-2026-20236-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and) (high, CVSS 7.5, published 21 Oct 2026) - [CVE-2026-20043: Cisco Snort 3 out-of-bounds write](https://junglewise.ai/threats/cve-2026-20043-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and) (critical, CVSS 9, published 21 Oct 2026) ## Most severe Cisco Secure Access vulnerabilities - [CVE-2026-20043: Cisco Snort 3 out-of-bounds write](https://junglewise.ai/threats/cve-2026-20043-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and) (critical, CVSS 9, published 21 Oct 2026) - [CVE-2026-20291: Cisco Snort 3 improper privilege management](https://junglewise.ai/threats/cve-2026-20291-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and) (high, CVSS 7.8, published 21 Oct 2026) - [CVE-2026-20356: Cisco Snort 3 uncontrolled resource consumption](https://junglewise.ai/threats/cve-2026-20356-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and) (high, CVSS 7.5, published 21 Oct 2026) - [CVE-2026-20236: Cisco Snort 3 incorrect calculation vulnerability](https://junglewise.ai/threats/cve-2026-20236-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and) (high, CVSS 7.5, published 21 Oct 2026) ## Vulnerabilities per week 4 vulnerabilities in the last four weeks, up from none in the four before. 1 critical against 0. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 4 | 1 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Cisco technologies - [Cisco IOS](https://junglewise.ai/threats/technologies/ios): 70 vulnerabilities - [Cisco Identity Services Engine](https://junglewise.ai/threats/technologies/identity-services-engine): 58 vulnerabilities - [Cisco IOS XE](https://junglewise.ai/threats/technologies/ios-xe): 57 vulnerabilities - [Cisco Firepower Threat Defense](https://junglewise.ai/threats/technologies/firepower-threat-defense): 33 vulnerabilities - [Cisco Firepower Threat Defense Software](https://junglewise.ai/threats/technologies/firepower-threat-defense-software): 33 vulnerabilities - [Cisco IOS XR](https://junglewise.ai/threats/technologies/ios-xr): 31 vulnerabilities - [Cisco IOS XE Software](https://junglewise.ai/threats/technologies/ios-xe-software): 28 vulnerabilities - [Cisco Adaptive Security Appliance Software](https://junglewise.ai/threats/technologies/secure-firewall-asa-software): 23 vulnerabilities - [Cisco Snort 3](https://junglewise.ai/threats/technologies/snort-3): 20 vulnerabilities - [Cisco Ios Software](https://junglewise.ai/threats/technologies/ios-software): 19 vulnerabilities - [Cisco ISE Passive Identity Connector](https://junglewise.ai/threats/technologies/ise-passive-identity-connector): 19 vulnerabilities - [Cisco Secure Firewall Management Center](https://junglewise.ai/threats/technologies/secure-firewall-management-center): 16 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Cisco Secure Access vulnerabilities", https://junglewise.ai/threats/technologies/cisco-secure-access, 11 November 2026.