UpHeron
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Servers and applications

CVE-2018-5504

In some circumstances, the Traffic Management Microkernel (TMM) does not properly handle certain malformed Websockets requests/responses, which allows remote attackers to cause a denial-of-service (DoS) or possible remote code execution on the F5 BIG-IP system running versions 13.0.0 - 13.1.0.3 or 12.1.0 - 12.1.3.1.

Severity
High 8.1
Published
22 Mar 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
12.1.3.2, 13.1.0.4
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
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_access_policy_manager
  • From 12.1.0 before 12.1.3.2
  • From 13.0.0 before 13.1.0.4
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_local_traffic_manager
  • From 12.1.0 before 12.1.3.2
  • From 13.0.0 before 13.1.0.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-5504
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-5504