CVE WatchAug 11, 2026

CVE-2024-20359

Cisco ASA and FTD Privilege Escalation Vulnerability

CVSS

6.0

Medium

EPSS

19.4%

p97

KEV

YES

Apr 24, 2024

Exploit Today

0-100

Published: Apr 24, 2024 · Last modified: Aug 11, 2026 · CWE-94

EPSS · 30d

19.4%EPSS · 30 days19.4%

2026-08-022026-08-31

KEV catalog record

Product

Cisco / Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)

Vulnerability

Cisco ASA and FTD Privilege Escalation Vulnerability

Added to KEV

Apr 24, 2024

Remediate by

May 1, 2024

Known ransomware use

Summary description

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain a privilege escalation vulnerability that can allow local privilege escalation from Administrator to root.

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-persist-rce-FLsNXF4h; https://nvd.nist.gov/vuln/detail/CVE-2024-20359

Technical description

A vulnerability in a legacy capability that allowed for the preloading of VPN clients and plug-ins and that has been available in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary code with root-level privileges. Administrator-level privileges are required to exploit this vulnerability. This vulnerability is due to improper validation of a file when it is read from system flash memory. An attacker could exploit this vulnerability by copying a crafted file to the disk0: file system of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the affected device after the next reload of the device, which could alter system behavior. Because the injected code could persist across device reboots, Cisco has raised the Security Impact Rating (SIR) of this advisory from Medium to High.

Official references

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