UpHeron
All vulnerabilities

Servers and applications

CVE-2016-8858

The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."

Severity
High 7.5
Published
9 Dec 2016
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSHServers and applications · cpe:a:openbsd:openssh
  • Version 6.8
  • Version 6.9
  • Version 7.0
  • Version 7.1
  • Version 7.2
  • Version 7.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-8858
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-8858