Reachable assertion in openvpn
Priority MEDIUM 48CWE-617Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-617.
Summary
OpenVPN version 2.3.12 and newer is vulnerable to unauthenticated Denial of Service of server via received large control packet. Note that this issue is fixed in 2.3.15 and 2.4.2.
Why it matters now
EPSS 0.13783 96th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenVPN | openvpn | 2.3.12 and newer | — | No fix listed | CNA |
- openvpn VendorOpenVPN Affected 2.3.12 and newer Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openvpn:openvpn:2.3.12:*:*:*:*:*:*:* | 2.3.12 | Vulnerable | OpenVPN |
| cpe:2.3:a:openvpn:openvpn:2.3.13:*:*:*:*:*:*:* | 2.3.13 | Vulnerable | OpenVPN |
| cpe:2.3:a:openvpn:openvpn:2.3.14:*:*:*:*:*:*:* | 2.3.14 | Vulnerable | OpenVPN |
| cpe:2.3:a:openvpn:openvpn:2.4.0:*:*:*:*:*:*:* | 2.4.0 | Vulnerable | OpenVPN |
| cpe:2.3:a:openvpn:openvpn:2.4.0:alpha2:*:*:*:*:*:* | 2.4.0 alpha2 | Vulnerable | OpenVPN |
| cpe:2.3:a:openvpn:openvpn:2.4.0:beta1:*:*:*:*:*:* | 2.4.0 beta1 | Vulnerable | OpenVPN |
| cpe:2.3:a:openvpn:openvpn:2.4.0:beta2:*:*:*:*:*:* | 2.4.0 beta2 | Vulnerable | OpenVPN |
| cpe:2.3:a:openvpn:openvpn:2.4.0:rc1:*:*:*:*:*:* | 2.4.0 rc1 | Vulnerable | OpenVPN |
| cpe:2.3:a:openvpn:openvpn:2.4.0:rc2:*:*:*:*:*:* | 2.4.0 rc2 | Vulnerable | OpenVPN |
| cpe:2.3:a:openvpn:openvpn:2.4.1:*:*:*:*:*:*:* | 2.4.1 | Vulnerable | OpenVPN |
- cpe:2.3:a:openvpn:openvpn:2.3.12:*:*:*:*:*:*:* Versions 2.3.12 Vulnerable ·OpenVPN
- cpe:2.3:a:openvpn:openvpn:2.3.13:*:*:*:*:*:*:* Versions 2.3.13 Vulnerable ·OpenVPN
- cpe:2.3:a:openvpn:openvpn:2.3.14:*:*:*:*:*:*:* Versions 2.3.14 Vulnerable ·OpenVPN
- cpe:2.3:a:openvpn:openvpn:2.4.0:*:*:*:*:*:*:* Versions 2.4.0 Vulnerable ·OpenVPN
- cpe:2.3:a:openvpn:openvpn:2.4.0:alpha2:*:*:*:*:*:* Versions 2.4.0 alpha2 Vulnerable ·OpenVPN
- cpe:2.3:a:openvpn:openvpn:2.4.0:beta1:*:*:*:*:*:* Versions 2.4.0 beta1 Vulnerable ·OpenVPN
- cpe:2.3:a:openvpn:openvpn:2.4.0:beta2:*:*:*:*:*:* Versions 2.4.0 beta2 Vulnerable ·OpenVPN
- cpe:2.3:a:openvpn:openvpn:2.4.0:rc1:*:*:*:*:*:* Versions 2.4.0 rc1 Vulnerable ·OpenVPN
- cpe:2.3:a:openvpn:openvpn:2.4.0:rc2:*:*:*:*:*:* Versions 2.4.0 rc2 Vulnerable ·OpenVPN
- cpe:2.3:a:openvpn:openvpn:2.4.1:*:*:*:*:*:*:* Versions 2.4.1 Vulnerable ·OpenVPN
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2017-7478
- 2026-10-03 Alias added: GHSA-3wwj-66cm-595v
References
More Openvpn vulnerabilities
- TI-2014-04453 Unquoted Windows search path vulnerability in the ptservice service prior to… CVSS 3.1MEDIUM 5.3
- TI-2022-00467 Authentication bypass in OpenVPN CVSS 3.1CRITICAL 9.8
- TI-2024-18509 Unrestricted file upload in OpenVPN 2 CVSS 3.1CRITICAL 9.8
- TI-2024-16468 The interactive service in OpenVPN 2.6.9 and earlier allows the OpenVPN service pipe to… CVSS 3.1HIGH 7.5
- TI-2023-25309 Use after free in OpenVPN 2 CVSS 3.1CRITICAL 9.8
- TI-2024-05196 OpenVPN before 2.6.11 does not santize PUSH_REPLY messages properly which an attacker… CVSS 3.1CRITICAL 9.1
Sources
- CVE-2017-7478 · CVE Program
- CVE-2017-7478 · NVD
- FIRST EPSS
- GHSA-3wwj-66cm-595v · GitHub Advisory Database · CC BY 4.0
- CVE-2017-7478 · Red Hat security data · CC BY 4.0
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