CVSS base score: 6.5 (Medium) vendor CNA · v3.1
Score assigned by the vendor's own CVE Numbering Authority (CNA); CISA's Vulnrichment program adds a score only when the CNA omits one.
Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Missing Authorization Vulnerability
Vendor: Cisco Product: Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense
Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Software VPN Web Server contain a missing authorization vulnerability. This vulnerability could be chained with CVE-2025-20333.
Each milestone comes from a different source, so gaps between them are gaps in what those sources publish, not evidence that nothing happened. EPSS history for this CVE holds 64 points from 2025-09-27, tracked daily from 2026-09-09; earlier points are weekly, which dates a spike to within a week. Peak probability 87.1% on 2026-08-29.
Check whether a specific version is affected →
What each source publishes about which product versions carry this vulnerability, kept as written rather than merged. Absence here means no source has published applicability data, not that nothing is affected.
No mentions found in monitored research blogs or news feeds.
Coverage across public collections only: Nuclei and OpenVAS NVT (scan);
Snort and Suricata ET Open (network); Sigma and YARA (host/SIEM);
Metasploit, Exploit-DB and public GitHub repositories (exploit). Absence
here means nothing public was found, not that detection is impossible.
GitHub PoC repositories are collected automatically by
PoC-in-GitHub (CC0) and are not vetted:
some are fakes and some are malware. Treat them as evidence that code was
published, not as code to run.
OpenVAS coverage derives from the Greenbone Community Feed, made available
under the Open Database License (ODbL) v1.0;
its individual Vulnerability Tests are licensed
GNU GPL v2.
| Source | Date | Record |
|---|---|---|
| CISA KEV | 2025-09-25 | source record → |
| CISA Vulnrichment | 2025-09-25 | source record → |
| Date | Advisory | Issuer |
|---|---|---|
| 2026-04-23 | FIRESTARTER Backdoor | CISA |
| 2025-11-12 | Update: Implementation Guidance for Emergency Directive on Cisco ASA and Firepower Device Vulnerabilities | CISA |
| 2025-09-26 | 2025-036: Critical Vulnerabilities in Cisco ASA and FTD | CERT-EU |
| 2025-09-25 | CISA Directs Federal Agencies to Identify and Mitigate Potential Compromise of Cisco Devices | CISA |
No exploit-tool sightings recorded for this CVE.
Evidence tiers are explained on the About page — a merged Metasploit module is far stronger evidence than a distro package mention.
CVE.org record → NVD entry → CISA KEV catalog → FortiGuard Labs → Rapid7 AttackerKB →