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CVE-2025-20244

Cisco Secure Firewall - Adaptive Security Appliance (ASA) Software

Cisco CVSS 7.7 Updated March 16, 2026

Executive Risk Summary

"A vulnerability in the Remote Access SSL VPN service for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow a remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to incomplete error checking when parsing an HTTP header field value, which could be exploited by sending a crafted HTTP request to a targeted Remote Access SSL VPN service."

Operational Audit Arsenal

Target Type Firmware Image
Target Asset Cisco Secure Firewall ASA Software
Standard Path Global Firmware

Manual Verification Required

This is a non-Windows asset (Cisco). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.

Patch Impact Forecast

Reboot Required Likely

High

Internal Work Notes

CVE-2025-20244: Cisco Secure Firewall ASA Software vulnerability allowing remote attackers to cause a DoS condition via crafted HTTP requests, requiring firmware update and reboot.

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Intelligence Sources

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Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.