CVE-2025-20362
Actively exploited. CVE-2025-20362 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-09-25) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2025-20362 is indexed in GitHub PoC and Nuclei. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
[Update on November 7, 2025] On November 5, 2025, Cisco updated its blog post originally published on September 25, 2025 (see Documentation section). The vendor states it is aware of a new attack affecting vulnerable ASA and FTD devices, causing a denial...
CSIRTS triage
- What
- A new attack affecting vulnerable ASA and FTD devices has been reported, causing denial of service.
- Who is affected
- Users of Cisco ASA and FTD devices are affected.
- Urgency
- Remediation is important as the vulnerability is actively exploited.
- Action
- Follow Cisco's updated guidance for mitigation.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2025-20362 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
- NucleiA nuclei-templates detection/PoC template exists for this CVE.look it up ↗
Advisory coverage (3)
- unknownexploitedContinued Evolution of Persistence Mechanism Against Cisco Secure Firewall Adaptive Security Appliance and Sec…cisco-psirt · 2026-05-19
- unknown[Update] Multiple vulnerabilities in Cisco ASA and FTD (September 25, 2025)cert-fr-alerte · 2025-09-25
- criticalexploitedCVE-2025-20362: Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FT…cisa-kev · 2025-09-25
External references
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