CVE-2024-20353
CVSS v3
8.6
HIGH
EPSS Score
19.5 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
A vulnerability in the management and VPN web servers for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to incomplete error checking when parsing an HTTP header. An attacker could exploit this vulnerability by sending a crafted HTTP request to a targeted web server on a device. A successful exploit could allow the attacker to cause a DoS condition when the device reloads.
CISA Known Exploited Vulnerability
- Date Added
- 2024-04-24
- Patch Due Date
- 2024-05-01
- Ransomware Use
- Unknown
Technical details
- Published
- 2024-04-24
- CERT-FR Advisory
- CERTFR-2024-ALE-007
- CERT-FR Link
- CERTFR-2024-ALE-007
Frequently asked questions
What is CVE-2024-20353?
A vulnerability in the management and VPN web servers for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to incomplete error checking when parsing an HTTP header. An attacker could exploit this vulnerability by sending a crafted HTTP request to a targeted web server on a device. A successful exploit could allow the attacker to cause a DoS condition when the device reloads.
Is CVE-2024-20353 actively exploited?
Yes. CVE-2024-20353 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 5/1/2024.
What is the CVSS score for CVE-2024-20353?
CVE-2024-20353 has a CVSS v3 base score of 8.6 (HIGH severity).
Is CVE-2024-20353 affecting your environment?
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