UpHeron
All vulnerabilities

Servers and applications

CVE-2020-3555

A vulnerability in the SIP inspection process of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a crash and reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a watchdog timeout and crash during the cleanup of threads that are…

Severity
High 7.5
Published
21 Oct 2020
Last changed
11 Aug 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.8.4.24, 9.9.2.80, 9.10.1.43, 9.12.4.2, 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 9.6.4.43
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:o:cisco:adaptive_security_appliance_software
  • From 9.7.0 before 9.8.4.24
  • From 9.9.0 before 9.9.2.80
  • From 9.10.0 before 9.10.1.43
  • From 9.12.0 before 9.12.4.2
  • 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-2020-3555
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-3555