Vulnerability in Cisco Adaptive Security Appliance (Asa) Software

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 unex…

EPSS: 0.174 (95.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

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

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-20353?
CVE-2024-20353 is a high-severity vulnerability in Cisco Adaptive Security Appliance (Asa) Software, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 8.6/10. Published 2024-04-24.
How severe is CVE-2024-20353?
High severity. CVSS v3 base score is 8.6 out of 10.
Is CVE-2024-20353 known to be exploited?
Yes. CVE-2024-20353 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-04-24), indicating it is being actively exploited. 6 public proof-of-concept repositories are indexed.