UpHeron
All vulnerabilities

Servers and applications

CVE-2021-34787

A vulnerability in the identity-based firewall (IDFW) rule processing feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass security protections. This vulnerability is due to improper handling of network requests by affected devices configured to use object group search. An attacker…

Severity
Medium 5.3
Published
27 Oct 2021
Last changed
11 Aug 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.8.4.40, 9.12.4.25, 9.14.3.1, 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 before 9.8.4.40
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:o:cisco:adaptive_security_appliance_software
  • From 9.9.0 before 9.12.4.25
  • From 9.13.0 before 9.14.3.1
  • From 9.15.0 before 9.15.1.17
  • From 9.16.0 before 9.16.1.28

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-34787
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-34787