UpHeron
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Servers and applications

CVE-2017-7479

OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.

Severity
Medium 6.5
Published
15 May 2017
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.9% in the next 30 daysHigher than 79% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
CWE-617
Attack
Over the network · Needs a user account · No user action needed
Attacker can
Take it down
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Sources
NVD

Affected software

SoftwareAffected versions
OpenVPNServers and applications · cpe:a:openvpn:openvpn
  • Version 2.4.1
  • Version 2.4.0
  • Version 2.4.0-rc2
  • Version 2.4.0-rc1
All 8 release lines
  • Every version up to 2.3.14
  • Version 2.4.0-alpha2
  • Version 2.4.0-beta1
  • Version 2.4.0-beta2
  • Version 2.4.0-rc1
  • Version 2.4.0-rc2
  • Version 2.4.0
  • Version 2.4.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-7479
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-7479