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CVE-2026-84732 (GCVE-0-2026-84732)

Vulnerability from nvd – Published: 2026-09-07 08:16 – Updated: 2026-09-08 15:01

Summary

Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:01 UTC

CWE

CWE-190 - Integer overflow or wraparound

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 0 , ≤ 2.6.22 (semver) Affected: 0 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-84732",
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CVE-2026-84256 (GCVE-0-2026-84256)

Vulnerability from nvd – Published: 2026-09-07 07:55 – Updated: 2026-09-08 15:00

Summary

An argument parsing issue in OpenVPN 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows remote authenticated users to execute arbitrary commands via a crafted certificate subject

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:00 UTC

CWE

CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')
CWE-88 - Improper neutralization of argument delimiters in a command ('argument injection')

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.1_rc10 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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CVE-2026-84226 (GCVE-0-2026-84226)

Vulnerability from nvd – Published: 2026-09-07 07:47 – Updated: 2026-09-08 14:59

Summary

OpenVPN version 2.5.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to perform a binary planting attack during network configuration steps

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:59 UTC

CWE

CWE-426 - Untrusted Search Path

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-84226",
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CVE-2026-82312 (GCVE-0-2026-82312)

Vulnerability from nvd – Published: 2026-09-07 07:40 – Updated: 2026-09-08 14:59

Summary

OpenVPN 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to cause a denial of service via a NULL DACL on named IPC objects

Severity

1.8 (Low)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:57 UTC

CWE

CWE-732 - Incorrect Permission Assignment for Critical Resource
CWE-412 - Unrestricted externally accessible lock

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.0.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

{
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}

CVE-2026-81830 (GCVE-0-2026-81830)

Vulnerability from nvd – Published: 2026-09-07 07:36 – Updated: 2026-09-08 14:56

Summary

The Windows interactive service in OpenVPN 2.4.0 through 2.6.22 allows local authenticated users to bypass the trusted configuration directory constraint via incorrect file path validation

Severity

5.6 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:55 UTC

CWE

CWE-73 - External control of file name or path

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.4.0 , ≤ 2.6.22 (semver)

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
      {
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CVE-2026-81738 (GCVE-0-2026-81738)

Vulnerability from nvd – Published: 2026-09-07 07:32 – Updated: 2026-09-08 14:55

Summary

OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-121 - Stack-based buffer overflow
CWE-193 - Off-by-one error
CWE-787 - Out-of-bounds write

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-78221 (GCVE-0-2026-78221)

Vulnerability from nvd – Published: 2026-09-07 07:28 – Updated: 2026-09-08 14:54

Summary

An incorrect buffer size calculation in the Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to cause memory corruption or disclose sensitive information via crafted NRPT inputs.

Severity

5.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:H/SC:H/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-131 - Incorrect calculation of buffer size

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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  "containers": {
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CVE-2026-78043 (GCVE-0-2026-78043)

Vulnerability from nvd – Published: 2026-09-07 07:21 – Updated: 2026-09-08 14:54

Summary

The Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via specially crafted paths

Severity

5.6 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-63650 (GCVE-0-2026-63650)

Vulnerability from nvd – Published: 2026-08-14 22:13 – Updated: 2026-08-17 15:38

Summary

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Severity

2 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:22 UTC

CWE

CWE-295 - Improper Certificate Validation
CWE-115 - Misinterpretation of Input

Assigner

OpenVPN mitre root

References

2 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , < 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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              "description": "CWE-295 Improper Certificate Validation",
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              "cweId": "CWE-115",
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CVE-2026-63649 (GCVE-0-2026-63649)

Vulnerability from nvd – Published: 2026-08-14 22:13 – Updated: 2026-08-17 15:38

Summary

The Windows interactive service in OpenVPN 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via crafted options that bypass whitelist checks

Severity

4.1 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:22 UTC

CWE

CWE-183 - Permissive list of allowed inputs

Assigner

OpenVPN mitre root

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.4.0 , < 2.6.22 (semver) Affected: 2.7_alpha1 , < 2.7.6 (semver)

Date Public

2026-07-29 16:00

Show details on NVD website

JSON

To clipboard

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CVE-2026-13379 (GCVE-0-2026-13379)

Vulnerability from nvd – Published: 2026-07-30 16:28 – Updated: 2026-07-30 18:09

Summary

The Windows interactive service in OpenVPN 2.7_alpha1 through 2.7.4 allows remote attackers to cause persistent DNS state pollution or a service crash via a crafted search domain during the disconnection process

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:N/VA:L/SC:H/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:09 UTC

CWE

CWE-142 - Improper neutralization of value delimiters
CWE-125 - Out-of-bounds read

Assigner

OpenVPN mitre root

References

2 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-13117 (GCVE-0-2026-13117)

Vulnerability from nvd – Published: 2026-07-30 16:32 – Updated: 2026-07-30 18:08

Summary

An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage

Severity

6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:08 UTC

CWE

CWE-416 - Use after free

Assigner

OpenVPN mitre root

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.6.0 , ≤ 2.6.20 (semver) Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-12996 (GCVE-0-2026-12996)

Vulnerability from nvd – Published: 2026-07-30 16:38 – Updated: 2026-07-30 18:07

Summary

A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry

Severity

6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:06 UTC

CWE

CWE-416 - Use after free
CWE-125 - Out-of-bounds read

Assigner

OpenVPN mitre root

References

4 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://lists.debian.org/debian-lts-announce/2026…

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.6.0 , ≤ 2.6.20 (semver) Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-12932 (GCVE-0-2026-12932)

Vulnerability from nvd – Published: 2026-07-30 16:42 – Updated: 2026-07-30 18:05

Summary

A memory leak in the tls-crypt-v2 client key extraction in OpenVPN 2.5.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service (memory exhaustion) via a flood of crafted packets

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:05 UTC

CWE

CWE-401 - Missing release of memory after effective lifetime

Assigner

OpenVPN mitre root

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.6.20 (semver) Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-11771 (GCVE-0-2026-11771)

Vulnerability from nvd – Published: 2026-07-30 16:36 – Updated: 2026-07-30 18:04

Summary

OpenVPN version 2.1.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows attackers via an off-by-one buffer write in the NTLM proxy authentication to potentially cause a crash via a crafted NTLM response from a malicious proxy server

Severity

7 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:04 UTC

CWE

CWE-193 - Off-by-one error
CWE-121 - Stack-based buffer overflow
CWE-787 - Out-of-bounds write

Assigner

OpenVPN mitre root

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.1.0 , ≤ 2.6.20 (semver) Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-84732 (GCVE-0-2026-84732)

Vulnerability from cvelistv5 – Published: 2026-09-07 08:16 – Updated: 2026-09-08 15:01

Summary

Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:01 UTC

CWE

CWE-190 - Integer overflow or wraparound

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 0 , ≤ 2.6.22 (semver) Affected: 0 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-84256 (GCVE-0-2026-84256)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:55 – Updated: 2026-09-08 15:00

Summary

An argument parsing issue in OpenVPN 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows remote authenticated users to execute arbitrary commands via a crafted certificate subject

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 15:00 UTC

CWE

CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')
CWE-88 - Improper neutralization of argument delimiters in a command ('argument injection')

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.1_rc10 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-84226 (GCVE-0-2026-84226)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:47 – Updated: 2026-09-08 14:59

Summary

OpenVPN version 2.5.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to perform a binary planting attack during network configuration steps

Severity

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:59 UTC

CWE

CWE-426 - Untrusted Search Path

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-82312 (GCVE-0-2026-82312)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:40 – Updated: 2026-09-08 14:59

Summary

OpenVPN 2.0.0 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows local authenticated users to cause a denial of service via a NULL DACL on named IPC objects

Severity

1.8 (Low)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:57 UTC

CWE

CWE-732 - Incorrect Permission Assignment for Critical Resource
CWE-412 - Unrestricted externally accessible lock

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.0.0 , ≤ 2.6.22 (semver) Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-81830 (GCVE-0-2026-81830)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:36 – Updated: 2026-09-08 14:56

Summary

The Windows interactive service in OpenVPN 2.4.0 through 2.6.22 allows local authenticated users to bypass the trusted configuration directory constraint via incorrect file path validation

Severity

5.6 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:55 UTC

CWE

CWE-73 - External control of file name or path

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.4.0 , ≤ 2.6.22 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-81738 (GCVE-0-2026-81738)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:32 – Updated: 2026-09-08 14:55

Summary

OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-121 - Stack-based buffer overflow
CWE-193 - Off-by-one error
CWE-787 - Out-of-bounds write

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-78221 (GCVE-0-2026-78221)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:28 – Updated: 2026-09-08 14:54

Summary

An incorrect buffer size calculation in the Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to cause memory corruption or disclose sensitive information via crafted NRPT inputs.

Severity

5.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:N/VA:H/SC:H/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-131 - Incorrect calculation of buffer size

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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  "containers": {
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        "metrics": [
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CVE-2026-78043 (GCVE-0-2026-78043)

Vulnerability from cvelistv5 – Published: 2026-09-07 07:21 – Updated: 2026-09-08 14:54

Summary

The Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via specially crafted paths

Severity

5.6 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-08 14:54 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

OpenVPN mitre root

References

1 reference

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-63650 (GCVE-0-2026-63650)

Vulnerability from cvelistv5 – Published: 2026-08-14 22:13 – Updated: 2026-08-17 15:38

Summary

OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field

Severity

2 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:22 UTC

CWE

CWE-295 - Improper Certificate Validation
CWE-115 - Misinterpretation of Input

Assigner

OpenVPN mitre root

References

2 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , < 2.7.6 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-63649 (GCVE-0-2026-63649)

Vulnerability from cvelistv5 – Published: 2026-08-14 22:13 – Updated: 2026-08-17 15:38

Summary

The Windows interactive service in OpenVPN 2.4.0 through 2.6.21 and 2.7_alpha1 through 2.7.5 allows local authenticated users to bypass the trusted configuration directory constraint and load arbitrary configuration files via crafted options that bypass whitelist checks

Severity

4.1 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:22 UTC

CWE

CWE-183 - Permissive list of allowed inputs

Assigner

OpenVPN mitre root

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.4.0 , < 2.6.22 (semver) Affected: 2.7_alpha1 , < 2.7.6 (semver)

Date Public

2026-07-29 16:00

Show details on NVD website

JSON

To clipboard

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    "dateReserved": "2026-07-17T14:38:48.698Z",
    "dateUpdated": "2026-08-17T15:38:37.331Z",
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  "dataType": "CVE_RECORD",
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}

CVE-2026-12932 (GCVE-0-2026-12932)

Vulnerability from cvelistv5 – Published: 2026-07-30 16:42 – Updated: 2026-07-30 18:05

Summary

A memory leak in the tls-crypt-v2 client key extraction in OpenVPN 2.5.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service (memory exhaustion) via a flood of crafted packets

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:05 UTC

CWE

CWE-401 - Missing release of memory after effective lifetime

Assigner

OpenVPN mitre root

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.5.0 , ≤ 2.6.20 (semver) Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-12932",
                "options": [
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                    "Exploitation": "none"
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              "value": "GENERAL"
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              "description": "CWE-401 Missing release of memory after effective lifetime",
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              "type": "CWE"
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      "providerMetadata": {
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}

CVE-2026-12996 (GCVE-0-2026-12996)

Vulnerability from cvelistv5 – Published: 2026-07-30 16:38 – Updated: 2026-07-30 18:07

Summary

A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry

Severity

6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:06 UTC

CWE

CWE-416 - Use after free
CWE-125 - Out-of-bounds read

Assigner

OpenVPN mitre root

References

4 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://lists.debian.org/debian-lts-announce/2026…

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.6.0 , ≤ 2.6.20 (semver) Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-07-30T17:33:47.338Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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            "url": "https://lists.debian.org/debian-lts-announce/2026/07/msg00013.html"
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              "version": "2.7_alpha1",
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              "lang": "en",
              "value": "GENERAL"
            }
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              "type": "CWE"
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          ]
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}

CVE-2026-11771 (GCVE-0-2026-11771)

Vulnerability from cvelistv5 – Published: 2026-07-30 16:36 – Updated: 2026-07-30 18:04

Summary

OpenVPN version 2.1.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows attackers via an off-by-one buffer write in the NTLM proxy authentication to potentially cause a crash via a crafted NTLM response from a malicious proxy server

Severity

7 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:04 UTC

CWE

CWE-193 - Off-by-one error
CWE-121 - Stack-based buffer overflow
CWE-787 - Out-of-bounds write

Assigner

OpenVPN mitre root

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.1.0 , ≤ 2.6.20 (semver) Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-11771",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-30T18:04:28.530958Z",
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              "type": "ssvc"
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    "cna": {
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          "defaultStatus": "unaffected",
          "product": "OpenVPN",
          "vendor": "OpenVPN",
          "versions": [
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              "lessThanOrEqual": "2.6.20",
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              "versionType": "semver"
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              "lessThanOrEqual": "2.7.4",
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              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenVPN version 2.1.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows attackers via an off-by-one buffer write in the NTLM proxy authentication to potentially cause a crash via a crafted NTLM response from a malicious proxy server"
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
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              "value": "GENERAL"
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          "descriptions": [
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              "description": "CWE-193 Off-by-one error",
              "lang": "en",
              "type": "CWE"
            }
          ]
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          "descriptions": [
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              "cweId": "CWE-121",
              "description": "CWE-121 Stack-based buffer overflow",
              "lang": "en",
              "type": "CWE"
            }
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        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds write",
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    "datePublished": "2026-07-30T16:36:41.087Z",
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  },
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CVE-2026-13117 (GCVE-0-2026-13117)

Vulnerability from cvelistv5 – Published: 2026-07-30 16:32 – Updated: 2026-07-30 18:08

Summary

An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage

Severity

6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:08 UTC

CWE

CWE-416 - Use after free

Assigner

OpenVPN mitre root

References

3 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.6.0 , ≤ 2.6.20 (semver) Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-13117",
                "options": [
                  {
                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-30T18:08:14.034841Z",
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        ],
        "providerMetadata": {
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            }
          ]
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      ],
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
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CVE-2026-13379 (GCVE-0-2026-13379)

Vulnerability from cvelistv5 – Published: 2026-07-30 16:28 – Updated: 2026-07-30 18:09

Summary

The Windows interactive service in OpenVPN 2.7_alpha1 through 2.7.4 allows remote attackers to cause persistent DNS state pollution or a service crash via a crafted search domain during the disconnection process

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:N/VA:L/SC:H/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 18:09 UTC

CWE

CWE-142 - Improper neutralization of value delimiters
CWE-125 - Out-of-bounds read

Assigner

OpenVPN mitre root

References

2 references

URL	Tags
https://community.openvpn.net/Security%20Announce…	vendor-advisory
https://community.openvpn.net/ReleaseHistory#open…	release-notes

Impacted products

1 product

Vendor	Product	Version
OpenVPN	OpenVPN	Affected: 2.7_alpha1 , ≤ 2.7.4 (semver)

Show details on NVD website

JSON

To clipboard

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