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CVE-2024-20260

HIGH
Published 2024-10-23T17:07:17.073Z
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CVSS Score

V3.1
8.6
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.002
probability
of exploitation in the wild

There is a 0.2% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.397
Higher than 39.7% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

A vulnerability in the VPN and management web servers of the Cisco Adaptive Security Virtual Appliance (ASAv) and Cisco Secure Firewall Threat Defense Virtual (FTDv), formerly Cisco Firepower Threat Defense Virtual, platforms could allow an unauthenticated, remote attacker to cause the virtual devices to run out of system memory, which could cause SSL VPN connection processing to slow down and eventually cease all together.

This vulnerability is due to a lack of proper memory management for new incoming SSL/TLS connections on the virtual platforms. An attacker could exploit this vulnerability by sending a large number of new incoming SSL/TLS connections to the targeted virtual platform. A successful exploit could allow the attacker to deplete system memory, resulting in a denial of service (DoS) condition. The memory could be reclaimed slowly if the attack traffic is stopped, but a manual reload may be required to restore operations quickly.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Cisco

Cisco Adaptive Security Appliance (ASA) Software

Affected Versions:

9.12.3 9.12.1 9.8.3 9.12.2 9.8.1 9.8.2 9.8.4 9.8.2.45 9.14.1 9.12.4 9.8.2.28 9.8.2.17 9.8.2.14 9.8.2.8 9.8.2.26 9.8.2.38 9.8.2.15 9.8.2.24 9.8.2.35 9.8.2.33 9.8.2.20 9.8.4.25 9.8.3.29 9.8.4.17 9.12.2.5 9.12.2.4 9.8.4.7 9.12.1.3 9.12.3.9 9.8.4.8 9.8.4.20 9.12.2.9 9.8.3.14 9.12.2.1 9.8.3.18 9.8.3.16 9.8.4.12 9.8.3.21 9.8.4.15 9.8.4.10 9.12.3.12 9.8.3.26 9.12.3.7 9.14.1.10 9.8.4.22 9.8.1.7 9.12.1.2 9.8.3.11 9.12.3.2 9.8.4.3 9.8.1.5 9.12.4.2 9.14.1.6 9.8.3.8 9.14.1.15 9.14.1.19 9.8.4.26 9.12.4.4 9.14.1.30 9.8.4.29 9.12.4.7 9.15.1 9.14.2 9.8.4.32 9.12.4.10 9.14.2.4 9.15.1.7 9.14.2.8 9.12.4.13 9.15.1.10 9.14.2.13 9.8.4.34 9.12.4.18 9.15.1.15 9.8.4.35 9.14.2.15 9.12.4.24 9.16.1 9.15.1.16 9.8.4.39 9.14.3 9.12.4.26 9.16.1.28 9.14.3.1 9.12.4.29 9.14.3.9 9.16.2 9.12.4.30 9.16.2.3 9.8.4.40 9.14.3.11 9.15.1.17 9.12.4.35 9.8.4.41 9.15.1.1 9.14.3.13 9.16.2.7 9.12.4.37 9.14.3.15 9.17.1 9.16.2.11 9.14.3.18 9.16.2.13 9.12.4.39 9.12.4.38 9.8.4.43 9.14.4 9.16.2.14 9.17.1.7 9.12.4.40 9.15.1.21 9.16.3.3 9.16.3 9.14.4.6 9.17.1.9 9.14.4.7 9.16.3.14 9.12.4.41 9.17.1.10 9.8.4.44 9.18.1 9.14.4.12 9.12.4.47 9.16.3.15 9.18.1.3 9.17.1.11 9.12.4.48 9.14.4.13 9.18.2 9.16.3.19 9.17.1.13 9.12.4.50 9.14.4.14 9.17.1.15 9.8.4.45 9.12.4.52 9.14.4.15 9.16.3.23 9.18.2.5 9.16.4 9.12.4.54 9.14.4.17 9.8.4.46 9.17.1.20 9.18.2.7 9.19.1 9.16.4.9 9.12.4.55 9.18.2.8 9.14.4.22 9.16.4.14 9.8.4.48 9.18.3 9.19.1.5 9.14.4.23 9.12.4.56 9.16.4.18 9.17.1.30 9.19.1.9 9.18.3.39 9.16.4.19 9.12.4.58 9.19.1.12 9.18.3.46 9.16.4.27 9.19.1.18 9.18.3.53 9.18.3.55 9.16.4.38 9.17.1.33 9.12.4.62 9.16.4.39 9.18.3.56 9.16.4.42 9.19.1.22 9.18.4 9.18.4.5 9.19.1.24 9.16.4.48 9.18.4.8 9.20.2 9.19.1.27 9.12.4.65 9.16.4.55 9.18.4.22 9.20.2.10 9.16.4.57 9.19.1.28 9.17.1.39 9.12.4.67 9.14.4.24 9.18.4.24 9.20.2.21 9.16.4.61 9.19.1.31 9.18.4.29
Cisco

Cisco Firepower Threat Defense Software

Affected Versions:

6.2.3.7 6.4.0 6.4.0.1 6.2.3.15 6.2.3.5 6.2.3 6.2.3.4 6.2.3.10 6.4.0.4 6.4.0.6 6.4.0.5 6.2.3.13 6.2.3.2 6.4.0.2 6.2.3.14 6.2.3.8 6.2.3.3 6.2.3.1 6.2.3.12 6.2.3.11 6.2.3.6 6.4.0.3 6.2.3.9 6.4.0.8 6.4.0.7 6.6.0 6.4.0.9 6.2.3.16 6.6.0.1 6.6.1 6.4.0.10 6.7.0 6.4.0.11 6.6.3 6.7.0.1 6.6.4 6.4.0.12 6.7.0.2 7.0.0 6.2.3.17 7.0.0.1 6.6.5 7.0.1 7.1.0 6.4.0.13 6.6.5.1 6.2.3.18 7.0.1.1 6.7.0.3 6.4.0.14 7.1.0.1 6.6.5.2 7.0.2 6.4.0.15 7.2.0 7.0.2.1 7.0.3 6.6.7 7.2.0.1 7.0.4 7.2.1 7.0.5 6.4.0.16 7.3.0 7.2.2 6.6.7.1 7.2.3 7.3.1 7.1.0.3 7.2.4 7.0.6 7.2.5 7.2.4.1 7.3.1.1 6.4.0.17 7.0.6.1 7.2.5.1 7.4.1 7.2.6 7.0.6.2 7.4.1.1 6.6.7.2 6.4.0.18 7.2.7 7.2.5.2 7.3.1.2 7.2.8 7.2.8.1
cisco

firepower_threat_defense_software

Affected Versions:

6.2.3 7.4.1 7.3.0 7.2.0 7.1.0 7.0.0 6.7.0 6.6.0 6.4.0
cisco

adaptive_security_appliance_software

Affected Versions:

9.8.1 9.20.2 9.19.1 9.18.1 9.17.1 9.16.1 9.15.1 9.14.1 9.12.1

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

EU Coordination

EU Coordinated

Exploitation Status

No Known Exploitation

EUVD ID

View on ENISA

ENISA Analysis

Malicious code in bioql (PyPI)

Affected Products (ENISA)

cisco
cisco adaptive security appliance (asa) software

ENISA Scoring

CVSS Score (3.1)

8.6
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Score

0.190
probability

ENISA References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftdvirtual-dos-MuenGnYR

Data provided by ENISA EU Vulnerability Database. Last updated: October 3, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-27g3-cp2g-22pw

Advisory Details

A vulnerability in the VPN and management web servers of the Cisco Adaptive Security Virtual Appliance (ASAv) and Cisco Secure Firewall Threat Defense Virtual (FTDv), formerly Cisco Firepower Threat Defense Virtual, platforms could allow an unauthenticated, remote attacker to cause the virtual devices to run out of system memory, which could cause SSL VPN connection processing to slow down and eventually cease all together. This vulnerability is due to a lack of proper memory management for new incoming SSL/TLS connections on the virtual platforms. An attacker could exploit this vulnerability by sending a large number of new incoming SSL/TLS connections to the targeted virtual platform. A successful exploit could allow the attacker to deplete system memory, resulting in a denial of service (DoS) condition. The memory could be reclaimed slowly if the attack traffic is stopped, but a manual reload may be required to restore operations quickly.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-20260
WEB https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftdvirtual-dos-MuenGnYR

Advisory provided by GitHub Security Advisory Database. Published: October 23, 2024, Modified: October 23, 2024

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftdvirtual-dos-MuenGnYR
Published: 2024-10-23T17:07:17.073Z
Last Modified: 2024-10-24T17:30:13.136Z
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