Memory leak in OpenVPN
Priority LOW 28CWE-401Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-401.
Summary
A memory leak in OpenVPN version 2.5.0 through 2.5.11, 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers with a valid tls-crypt-v2 client key to potentially cause a denial of service
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00549 46th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenVPN | OpenVPN | 2.5.0 – 2.5.11; 2.6.0 – 2.6.20; 2.7_alpha1 – 2.7.4 | — | No fix listed | CNA |
- OpenVPN VendorOpenVPN Affected 2.5.0 – 2.5.11; 2.6.0 – 2.6.20; 2.7_alpha1 – 2.7.4 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:* | 2.5.0 – 2.5.11; 2.6.0 to before 2.6.21; 2.7 to before 2.7.5 | Vulnerable | OpenVPN |
- cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:* Versions 2.5.0 – 2.5.11; 2.6.0 to before 2.6.21; 2.7 to before 2.7.5 Vulnerable ·OpenVPN
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-13698
- 2026-10-03 Alias added: GHSA-rwhm-c36w-484h
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-2026-13698 · CVE Program
- CVE-2026-13698 · NVD
- FIRST EPSS
- GHSA-rwhm-c36w-484h · GitHub Advisory Database · CC BY 4.0
- CVE-2026-13698 · Red Hat security data · CC BY 4.0
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