CVE-2026-84790
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a...
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
- Record
CVE-2026-84790- CVSS 4.0
- 7.6 High
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-290, CWE-158
- Updated
- 2026-11-02
EUVDEUVD-2026-100750
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
- Record
EUVD-2026-100750- CVSS 4.0
- 7.6 High
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6f9v-9427-9fpm
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a...
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
- Record
GHSA-6f9v-9427-9fpm- CVSS 4.0
- 7.6 High
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-158
- Updated
- 2026-11-02
NVD
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
- Record
CVE-2026-84790- CVSS 4.0
- 7.6 High
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-158, CWE-290
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-84790
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
- Record
DEBIAN-CVE-2026-84790- CVSS 4.0
- 7.6 High
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-84790
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
- Record
UBUNTU-CVE-2026-84790- CVSS 4.0
- 7.6 High
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N - Updated
- 2026-11-02
OSVUSN-8953-1 No score
openvpn vulnerability
It was discovered that OpenVPN incorrectly handled certificate subject fields. A remote authenticated user could possibly use this issue to impersonate other users.
- Record
USN-8953-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
openvpnDebian:12 |
All versions, plus listed versions 2.6.11-12.6.12-12.6.13-12.6.14-0+deb12u12.6.14-0+deb12u2 Show 40 moreShow less2.6.14-12.6.14-22.6.15-12.6.3-12.6.3-1+deb12u12.6.3-1+deb12u1~bpo11+12.6.3-1+deb12u22.6.3-1+deb12u2~bpo11+12.6.3-1+deb12u32.6.3-1+deb12u42.6.3-22.6.3-2.12.6.7-12.6.9-12.7.0-12.7.0-1~bpo13+12.7.0~alpha1-12.7.0~alpha2-12.7.0~alpha3-12.7.0~beta1-12.7.0~beta2-12.7.0~beta3-12.7.0~rc1-12.7.0~rc2-12.7.0~rc2-22.7.0~rc3-12.7.0~rc4-12.7.0~rc5-12.7.0~rc6-12.7.1-12.7.1-1~bpo13+12.7.2-12.7.2-1~bpo13+12.7.3-12.7.5-12.7.5-1~bpo13+12.7.7-12.7.7-1~bpo13+12.7.8-12.7.8-1~bpo13+1 |
None known |
openvpnDebian:13 |
All versions, plus listed versions 2.6.14-12.6.14-1+deb13u12.6.14-1+deb13u22.6.14-1+deb13u32.6.14-2 Show 27 moreShow less2.6.15-12.7.0-12.7.0-1~bpo13+12.7.0~alpha1-12.7.0~alpha2-12.7.0~alpha3-12.7.0~beta1-12.7.0~beta2-12.7.0~beta3-12.7.0~rc1-12.7.0~rc2-12.7.0~rc2-22.7.0~rc3-12.7.0~rc4-12.7.0~rc5-12.7.0~rc6-12.7.1-12.7.1-1~bpo13+12.7.2-12.7.2-1~bpo13+12.7.3-12.7.5-12.7.5-1~bpo13+12.7.7-12.7.7-1~bpo13+12.7.8-12.7.8-1~bpo13+1 |
None known |
openvpnDebian:14 |
before 2.7.8-1, plus listed versions 2.6.14-12.6.14-22.6.15-12.7.0-12.7.0-1~bpo13+1 Show 23 moreShow less2.7.0~alpha1-12.7.0~alpha2-12.7.0~alpha3-12.7.0~beta1-12.7.0~beta2-12.7.0~beta3-12.7.0~rc1-12.7.0~rc2-12.7.0~rc2-22.7.0~rc3-12.7.0~rc4-12.7.0~rc5-12.7.0~rc6-12.7.1-12.7.1-1~bpo13+12.7.2-12.7.2-1~bpo13+12.7.3-12.7.5-12.7.5-1~bpo13+12.7.7-12.7.7-1~bpo13+12.7.8-1~bpo13+1 |
2.7.8-1 |
openvpnUbuntu:Pro:14.04:LTS |
All versions, plus listed versions 2.3.2-4ubuntu12.3.2-5ubuntu12.3.2-7ubuntu12.3.2-7ubuntu22.3.2-7ubuntu3 Show 4 moreShow less2.3.2-7ubuntu3.12.3.2-7ubuntu3.22.3.2-7ubuntu3.2+esm12.3.2-7ubuntu3.2+esm2 |
None known |
openvpnUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 2.3.7-1ubuntu12.3.7-2ubuntu12.3.8-1ubuntu12.3.10-1ubuntu12.3.10-1ubuntu2 Show 4 moreShow less2.3.10-1ubuntu2.12.3.10-1ubuntu2.22.3.10-1ubuntu2.2+esm12.3.10-1ubuntu2.2+esm2 |
None known |
openvpnUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 2.4.3-4ubuntu12.4.4-1ubuntu12.4.4-2ubuntu12.4.4-2ubuntu1.12.4.4-2ubuntu1.2 Show 5 moreShow less2.4.4-2ubuntu1.32.4.4-2ubuntu1.52.4.4-2ubuntu1.62.4.4-2ubuntu1.72.4.4-2ubuntu1.7+esm1 |
None known |
openvpnUbuntu:20.04:LTS |
All versions, plus listed versions 2.4.7-1ubuntu22.4.7-1ubuntu2.20.04.22.4.7-1ubuntu2.20.04.32.4.7-1ubuntu2.20.04.42.4.12-0ubuntu0.20.04.12.4.12-0ubuntu0.20.04.2 |
None known |
openvpnUbuntu:22.04:LTS |
before 2.5.11-0ubuntu0.22.04.6, plus listed versions 2.5.1-3ubuntu12.5.1-3ubuntu22.5.1-3ubuntu42.5.1-3ubuntu52.5.5-1ubuntu1 Show 8 moreShow less2.5.5-1ubuntu32.5.5-1ubuntu3.12.5.9-0ubuntu0.22.04.22.5.9-0ubuntu0.22.04.32.5.11-0ubuntu0.22.04.12.5.11-0ubuntu0.22.04.32.5.11-0ubuntu0.22.04.42.5.11-0ubuntu0.22.04.5 |
2.5.11-0ubuntu0.22.04.6 |
openvpnUbuntu:24.04:LTS |
before 2.6.19-0ubuntu0.24.04.5, plus listed versions 2.6.5-0ubuntu12.6.7-1ubuntu12.6.9-1ubuntu22.6.9-1ubuntu32.6.9-1ubuntu4 Show 10 moreShow less2.6.9-1ubuntu4.12.6.12-0ubuntu0.24.04.12.6.12-0ubuntu0.24.04.32.6.14-0ubuntu0.24.04.12.6.14-0ubuntu0.24.04.22.6.14-0ubuntu0.24.04.32.6.19-0ubuntu0.24.04.12.6.19-0ubuntu0.24.04.22.6.19-0ubuntu0.24.04.32.6.19-0ubuntu0.24.04.4 |
2.6.19-0ubuntu0.24.04.5 |
openvpnUbuntu:26.10 |
before 2.7.7-1ubuntu1.1, plus listed versions 2.7.0-1ubuntu12.7.3-1ubuntu22.7.5-1ubuntu22.7.5-1ubuntu32.7.7-1ubuntu1 |
2.7.7-1ubuntu1.1 |
openvpnUbuntu:26.04:LTS |
before 2.7.0-1ubuntu1.4, plus listed versions 2.6.14-2ubuntu12.6.15-1ubuntu12.7.0~rc5-1ubuntu52.7.0~rc6-1ubuntu12.7.0-1ubuntu12.7.0-1ubuntu1.12.7.0-1ubuntu1.22.7.0-1ubuntu1.3 |
2.7.0-1ubuntu1.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-84790 is a high vulnerability (CVSS 7.6) in Openvpn, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 3rd percentile. Fixed in openvpn 2.7.8-1.