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Servers and applications

CVE-2018-15454

A vulnerability in the Session Initiation Protocol (SIP) inspection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload or trigger high CPU, resulting in a denial of service (DoS) condition. The vulnerability is due to improper handling of SIP traffic. An…

Severity
High 8.6
Published
1 Nov 2018
Last changed
11 Aug 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.4.4.27, 9.6.4.18, 9.8.3.16, 9.9.2.32, 9.10.1.2
Exploit chance
4.3% in the next 30 daysHigher than 91% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:o:cisco:adaptive_security_appliance_software
  • From 9.4 before 9.4.4.27
  • From 9.6 before 9.6.4.18
  • From 9.8 before 9.8.3.16
  • From 9.9 before 9.9.2.32
  • From 9.10 before 9.10.1.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-15454
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-15454