UpHeron
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Servers and applications

CVE-2020-3572

A vulnerability in the SSL/TLS session handler of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a memory leak when closing SSL/TLS connections in a specific state. An attacker could exploit this…

Severity
High 8.6
Published
21 Oct 2020
Last changed
11 Aug 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.8.4.26, 9.9.2.80, 9.10.1.44, 9.12.4.4, 9.13.1.13, 9.14.1.19
Sources
NVD

Affected software

SoftwareAffected versions
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:a:cisco:adaptive_security_appliance
  • Every version before 9.6
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:o:cisco:adaptive_security_appliance_software
  • From 9.8.0 before 9.8.4.26
  • From 9.9.0 before 9.9.2.80
  • From 9.10.0 before 9.10.1.44
  • From 9.12.0 before 9.12.4.4
  • From 9.13.0 before 9.13.1.13
  • From 9.14.0 before 9.14.1.19

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-3572
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-3572