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CVE-2024-20359

Improper Control of Generation of Code

CVSS 3.1 Medium 6.0Known exploited (CISA KEV)

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

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 description from the CVE record, published by cisco. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org

Key data

CVSS 3.1 Medium 6.0

Score published by cisco in the CVE record.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

  • Attack vector: Local

    The attacker needs local access to the system, or to trick a user into running something.

  • Attack complexity: Low

    No special conditions are needed. The attack can be repeated at will.

  • Privileges required: High

    An account with significant privileges, such as an administrator, is needed.

  • User interaction: None

    No action from any user is needed.

  • Scope: Unchanged

    The impact stays within the vulnerable component.

  • Confidentiality impact: High

    Serious or total effect on the secrecy of data.

  • Integrity impact: High

    Serious or total effect on the trustworthiness of data.

  • Availability impact: None

    No effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.
Score
0.18816 (18.8% probability)
Percentile
97.3%
Scores of
Nov 10, 2026
Model
v2026.06.15

CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.
Name in the catalog
Cisco ASA and FTD Privilege Escalation Vulnerability
Added to the catalog
Apr 24, 2024
Federal due date
May 1, 2024

CISA assessment as of Apr 30, 2024

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.
Exploitation
Recorded by CISA as active
Automatable
no
Technical impact
partial

Weakness (CWE)

CWE catalog version 5.0.
CWE names: Copyright © 2006-2026, The MITRE Corporation. See /security/cve/legal for the CWE license.
  • CWE-94Improper Control of Generation of Code

Affected products

Products listed in the CVE record, as the CNA published them.

  • Cisco Adaptive Security Appliance (ASA) Software

    • affected: 9.8.1
    • affected: 9.8.1.5
    • affected: 9.8.1.7
    • affected: 9.8.2
    • affected: 9.8.2.8
    • affected: 9.8.2.14
    • affected: 9.8.2.15
    • affected: 9.8.2.17
    • affected: 9.8.2.20
    • affected: 9.8.2.24
    • affected: 9.8.2.26
    • affected: 9.8.2.28
    • affected: 9.8.2.33
    • affected: 9.8.2.35
    • affected: 9.8.2.38
    • affected: 9.8.3.8
    • affected: 9.8.3.11
    • affected: 9.8.3.14
    • affected: 9.8.3.16
    • affected: 9.8.3.18
    • affected: 9.8.3.21
    • affected: 9.8.3
    • affected: 9.8.3.26
    • affected: 9.8.3.29
    • affected: 9.8.4
    • and 162 more

  • Cisco Firepower Threat Defense Software

    • affected: 6.2.3
    • affected: 6.2.3.1
    • affected: 6.2.3.2
    • affected: 6.2.3.3
    • affected: 6.2.3.4
    • affected: 6.2.3.5
    • affected: 6.2.3.6
    • affected: 6.2.3.7
    • affected: 6.2.3.8
    • affected: 6.2.3.10
    • affected: 6.2.3.11
    • affected: 6.2.3.9
    • affected: 6.2.3.12
    • affected: 6.2.3.13
    • affected: 6.2.3.14
    • affected: 6.2.3.15
    • affected: 6.2.3.16
    • affected: 6.2.3.17
    • affected: 6.2.3.18
    • affected: 6.6.0
    • affected: 6.6.0.1
    • affected: 6.6.1
    • affected: 6.6.3
    • affected: 6.6.4
    • affected: 6.6.5
    • and 55 more

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

Timeline

  1. ID reserved
  2. Added to CISA KEV
  3. Record published
  4. Record last updated

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About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.
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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:51 UTC. Sources and licenses