UpHeron
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Servers and applications

CVE-2021-1573

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper input validation when parsing HTTPS requests. An attacker could exploit this vulnerability by sending a malicious…

Severity
High 7.5
Published
11 Jan 2022
Last changed
11 Aug 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.8.4.40, 9.12.4.26, 9.14.3, 9.15.1.17, 9.16.1.28
Sources
NVD

Affected software

SoftwareAffected versions
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:a:cisco:adaptive_security_appliance
  • Every version up to 9.7
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:o:cisco:adaptive_security_appliance_software
  • From 9.8 before 9.8.4.40
  • From 9.9 before 9.12.4.26
  • From 9.13 before 9.14.3
  • From 9.15 before 9.15.1.17
  • From 9.16 before 9.16.1.28

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-1573
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-1573