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Servers and applications

CVE-2021-34704

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
9.15.1.17, 9.16.2
Sources
NVD

Affected software

SoftwareAffected versions
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:o:cisco:adaptive_security_appliance_software
  • From 9.15 before 9.15.1.17
  • From 9.16 before 9.16.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-34704
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-34704