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Vulnerability Details :

CVE-2026-2738

Summary
Assigner-OpenVPN
Assigner Org ID-36a55730-e66d-4d39-8ca6-3c3b3017965e
Published At-19 Feb, 2026 | 20:00
Updated At-19 Feb, 2026 | 20:00
Rejected At-
Credits

Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:OpenVPN
Assigner Org ID:36a55730-e66d-4d39-8ca6-3c3b3017965e
Published At:19 Feb, 2026 | 20:00
Updated At:19 Feb, 2026 | 20:00
Rejected At:
▼CVE Numbering Authority (CNA)

Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet

Affected Products
Vendor
OpenVPN
Product
ovpn-dco-win
Repo
https://github.com/OpenVPN/ovpn-dco-win/
Platforms
  • Windows
Default Status
unaffected
Versions
Affected
  • 2.8.0
Problem Types
TypeCWE IDDescription
CWECWE-131CWE-131 Incorrect Calculation of Buffer Size
Type: CWE
CWE ID: CWE-131
Description: CWE-131 Incorrect Calculation of Buffer Size
Metrics
VersionBase scoreBase severityVector
4.05.6MEDIUM
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P
Version: 4.0
Base score: 5.6
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://community.openvpn.net/Security%20Announcements/CVE-2026-2738
vendor-advisory
Hyperlink: https://community.openvpn.net/Security%20Announcements/CVE-2026-2738
Resource:
vendor-advisory
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@openvpn.net
Published At:19 Feb, 2026 | 21:18
Updated At:19 Feb, 2026 | 21:18

Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.05.6MEDIUM
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/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
Type: Secondary
Version: 4.0
Base score: 5.6
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P/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
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-131Secondarysecurity@openvpn.net
CWE ID: CWE-131
Type: Secondary
Source: security@openvpn.net
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://community.openvpn.net/Security%20Announcements/CVE-2026-2738security@openvpn.net
N/A
Hyperlink: https://community.openvpn.net/Security%20Announcements/CVE-2026-2738
Source: security@openvpn.net
Resource: N/A

Change History

0
Information is not available yet

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