UpHeron
All vulnerabilities

Servers and applications

CVE-2015-4638

The FastL4 virtual server in F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, GTM, Link Controller, and PEM 11.3.0 through 11.5.2 and 11.6.0 through 11.6.0 HF4, BIG-IP Edge Gateway, WebAccelerator, and WOM 11.2.1 through 11.3.0, and BIG-IP PSM 11.2.1 through 11.4.1 allows remote attackers to cause a denial of service (Traffic Management Microkernel restart) via a fragmented packet.

Severity
Medium 5.0
Published
18 Sept 2015
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.7% in the next 30 daysHigher than 78% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Improper input validation (CWE-20)
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_local_traffic_manager
  • Version 11.6.0
  • Version 11.5.2
  • Version 11.5.1
  • Version 11.5.0
All 7 release lines
  • Version 11.3.0
  • Version 11.4.0
  • Version 11.4.1
  • Version 11.5.0
  • Version 11.5.1
  • Version 11.5.2
  • Version 11.6.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-4638
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-4638