UpHeron
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Servers and applications

CVE-2019-1687

A vulnerability in the TCP proxy functionality for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to an error in TCP-based packet inspection, which could cause the TCP packet to…

Severity
High 7.5
Published
3 May 2019
Last changed
11 Aug 2026
Added to UpHeron
1 Nov 2026
Fixed in
9.6.4.25, 9.8.4, 9.9.2.50, 9.10.1.17
Exploit chance
2.9% in the next 30 daysHigher than 87% 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 9.5 before 9.6.4.25
  • From 9.7 before 9.8.4
  • From 9.9 before 9.9.2.50
  • From 9.10 before 9.10.1.17

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-1687
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-1687