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Servers and applications

CVE-2018-15397

A vulnerability in the implementation of Traffic Flow Confidentiality (TFC) over IPsec functionality in 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 restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to an error that…

Severity
Medium 6.8
Published
5 Oct 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.2% in the next 30 daysHigher than 68% 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
  • Version 9.6.4
  • Version 9.8.2
  • Version 9.9.1
  • Version 9.9.1(1)

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-15397
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-15397