HIGH
OpenVPN version 2.3.12 and newer is vulnerable to unauthenticated Denial of Service of server via received large control packet
Published May 15, 2017
7.5
HIGHCVSS 3.0
EPSS 13.78%
Description
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.
Affected products
-
- Version 2.3.12 and newerStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| OpenVPN Technologies, Inc | OpenVPN | n/a |
|
OR
- 2.3.12
- 2.3.13
- 2.3.14
- 2.4.0
- 2.4.0
- 2.4.0
- 2.4.0
- 2.4.0
- 2.4.0
- 2.4.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
13.78% 0.13783
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.13783
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (32 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 13.78% (0.13783) | 96.41th | v5 (v2026.06.15) |
| Sep 22, 2026 | 13.78% (0.13783) | 96.34th | v5 (v2026.06.15) |
| Sep 21, 2026 | 11.56% (0.11561) | 95.90th | v5 (v2026.06.15) |
| Sep 20, 2026 | 13.78% (0.13783) | 96.34th | v5 (v2026.06.15) |
| Sep 6, 2026 | 13.89% (0.13892) | 96.28th | v5 (v2026.06.15) |
| Sep 5, 2026 | 11.65% (0.11654) | 95.83th | v5 (v2026.06.15) |
| Aug 30, 2026 | 13.89% (0.13892) | 96.26th | v5 (v2026.06.15) |
| Aug 28, 2026 | 11.65% (0.11654) | 95.80th | v5 (v2026.06.15) |
| Aug 24, 2026 | 13.89% (0.13892) | 96.24th | v5 (v2026.06.15) |
| Aug 23, 2026 | 11.65% (0.11654) | 95.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 13.89% (0.13892) | 96.05th | v5 (v2026.06.15) |
| Jan 27, 2026 | 4.60% (0.04599) | 88.95th | v4 (v2025.03.14) |
| Nov 21, 2025 | 6.90% (0.06902) | 91.00th | v4 (v2025.03.14) |
| Nov 18, 2025 | 9.79% (0.09785) | 92.15th | v4 (v2025.03.14) |
| Oct 22, 2025 | 6.90% (0.06902) | 90.93th | v4 (v2025.03.14) |
| Jul 24, 2025 | 15.23% (0.15234) | 94.28th | v4 (v2025.03.14) |
| Jul 19, 2025 | 9.06% (0.09059) | 92.25th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.31% (0.03313) | 86.10th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.93% (0.07934) | 86.49th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.31% (0.03313) | 86.41th | v4 (v2025.03.14) |
| Dec 17, 2024 | 15.78% (0.15784) | 95.91th | v3 (v2023.03.01) |
| Nov 27, 2024 | 20.75% (0.20750) | 96.55th | v3 (v2023.03.01) |
| May 8, 2023 | 23.58% (0.23583) | 95.83th | v3 (v2023.03.01) |
| Apr 25, 2023 | 12.88% (0.12879) | 94.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 12.74% (0.12739) | 94.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.38% (0.08382) | 93.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.38% (0.08382) | 93.35th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.38% (0.08382) | 82.62th | v2 (v2022.01.01) |
| Feb 3, 2022 | 5.55% (0.05553) | 80.10th | v1 |
| Jan 6, 2022 | 5.55% (0.05553) | 79.90th | v1 |
| Sep 1, 2021 | 5.55% (0.05553) | 88.57th | v1 |
| Apr 14, 2021 | 5.55% (0.05553) | 0.00th | v1 |
Weaknesses (2)
References (4)
- http://www.securityfocus.com/bid/98444 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1038473 vdb-entryx_refsource_SECTRACK
- https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAudits x_refsource_CONFIRMVendor Advisory
- https://www.exploit-db.com/exploits/41993/ exploitx_refsource_EXPLOIT-DB
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/98444 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1038473 | vdb-entryx_refsource_SECTRACK | |
| https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAudits | x_refsource_CONFIRMVendor Advisory | |
| https://www.exploit-db.com/exploits/41993/ | exploitx_refsource_EXPLOIT-DB |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published May 15, 2017
Updated Aug 5, 2024
Reserved Apr 5, 2017
Link CVE-2017-7478
CISA Vulnrichment
Updated n/a