All vulnerabilities

Servers and applications

CVE-2020-11810

An issue was discovered in OpenVPN 2.4.x before 2.4.9. An attacker can inject a data channel v2 (P_DATA_V2) packet using a victim's peer-id. Normally such packets are dropped, but if this packet arrives before the data channel crypto parameters have been initialized, the victim's connection will be dropped. This requires careful timing due to the small time window (usually within a few seconds)…

Severity
Low 3.7
Published
27 Apr 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.4.9
Sources
NVD

Affected software

SoftwareAffected versions
OpenVPNServers and applications · cpe:a:openvpn:openvpn
  • From 2.4.0 before 2.4.9

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-11810
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-11810