🛡️ CVE-2026-20105
🟠 CVSS 7.7 — High ✅ No Known Exploit CWE-401 NVD
7.7
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability in the Remote Access SSL VPN functionality of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software could allow an authenticated, remote attacker with a valid VPN connection to exhaust device memory resulting in a denial of service (DoS) condition.This does not affect the management or MUS interfaces. This vulnerability is due to trusting user input without validation. An attacker could exploit this vulnerability by sending crafted packets to the Remote Access SSL VPN server. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

Details

Severity HIGH
CVSS Score 7.7
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE CWE-401
Public Exploit ✅ No
Source NVD
Published 2026-03-04
Updated 2026-06-02
Modified 2026-04-16
Fix URL N/A

Affected Packages

Software From version Fixed in
adaptive-security-appliance-software 9.23.1 9.23.1.7
firepower-threat-defense-software 7.7.0 7.7.11

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