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Servers and applications

CVE-2018-15399

A vulnerability in the TCP syslog module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to exhaust the 1550-byte buffers on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to a missing boundary check in an internal function. An attacker could…

Severity
Medium 6.8
Published
5 Oct 2018
Last changed
11 Aug 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.8% in the next 30 daysHigher than 79% 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 9.4(4)
  • Version 9.8(2)

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-15399
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-15399