MEDIUM
OpenVPN 2.x before 2.0.4, when running in TCP mode, allows remote attackers to cause a denial of service (segmentation fault) by forcing the accept function call to return an error status, which leads to a null dereference in an exception handler
Published Nov 2, 2005
5.0
MEDIUMCVSS 2.0
EPSS 2.50%
Description
OpenVPN 2.x before 2.0.4, when running in TCP mode, allows remote attackers to cause a denial of service (segmentation fault) by forcing the accept function call to return an error status, which leads to a null dereference in an exception handler.
Affected products
No data.
OR
- 2.0
- 2.0.1_rc1
- 2.0.1_rc2
- 2.0.1_rc3
- 2.0.1_rc4
- 2.0.1_rc5
- 2.0.1_rc6
- 2.0.1_rc7
- 2.0.2_rc1
- 2.0.3_rc1
- 2.0_beta1
- 2.0_beta2
- 2.0_beta3
- 2.0_beta4
- 2.0_beta5
- 2.0_beta6
- 2.0_beta7
- 2.0_beta8
- 2.0_beta9
- 2.0_beta10
- 2.0_beta11
- 2.0_beta12
- 2.0_beta13
- 2.0_beta15
- 2.0_beta16
- 2.0_beta17
- 2.0_beta18
- 2.0_beta19
- 2.0_beta20
- 2.0_beta28
- 2.0_rc1
- 2.0_rc2
- 2.0_rc3
- 2.0_rc4
- 2.0_rc5
- 2.0_rc6
- 2.0_rc7
- 2.0_rc8
- 2.0_rc9
- 2.0_rc10
- 2.0_rc11
- 2.0_rc12
- 2.0_rc13
- 2.0_rc14
- 2.0_rc15
- 2.0_rc16
- 2.0_rc17
- 2.0_rc18
- 2.0_rc19
- 2.0_rc20
- 2.0_rc21
- 2.0_test1
- 2.0_test2
- 2.0_test3
- 2.0_test5
- 2.0_test6
- 2.0_test7
- 2.0_test8
- 2.0_test9
- 2.0_test10
- 2.0_test11
- 2.0_test12
- 2.0_test14
- 2.0_test15
- 2.0_test16
- 2.0_test17
- 2.0_test18
- 2.0_test19
- 2.0_test20
- 2.0_test21
- 2.0_test22
- 2.0_test23
- 2.0_test24
- 2.0_test26
- 2.0_test27
- 2.0_test29
- 2.0.1
- 2.0.2
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.
No CVSS v3.0 score for this CVE.
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.
2.50% 0.02495
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02495
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.50% (0.02495) | 84.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.50% (0.02495) | 82.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.51% (0.02512) | 84.31th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.48% (0.03483) | 91.39th | v3 (v2023.03.01) |
| Oct 9, 2024 | 4.96% (0.04956) | 92.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 9.33% (0.09326) | 93.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (11)
- http://openvpn.net/changelog.html x_refsource_CONFIRM
- http://secunia.com/advisories/17376 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://secunia.com/advisories/17447 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/17452 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/17480 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2005/dsa-885 vendor-advisoryx_refsource_DEBIAN
- http://www.gentoo.org/security/en/glsa/glsa-200511-07.xml vendor-advisoryx_refsource_GENTOO
- http://www.novell.com/linux/security/advisories/2005_25_sr.html vendor-advisoryx_refsource_SUSE
- http://www.osvdb.org/20416 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/archive/1/415487 vendor-advisoryx_refsource_OPENPKG
- http://www.securityfocus.com/bid/15270 vdb-entryx_refsource_BID
| Link | Providers | Tags |
|---|---|---|
| http://openvpn.net/changelog.html | x_refsource_CONFIRM | |
| http://secunia.com/advisories/17376 | third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory | |
| http://secunia.com/advisories/17447 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/17452 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/17480 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.debian.org/security/2005/dsa-885 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.gentoo.org/security/en/glsa/glsa-200511-07.xml | vendor-advisoryx_refsource_GENTOO | |
| http://www.novell.com/linux/security/advisories/2005_25_sr.html | vendor-advisoryx_refsource_SUSE | |
| http://www.osvdb.org/20416 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/archive/1/415487 | vendor-advisoryx_refsource_OPENPKG | |
| http://www.securityfocus.com/bid/15270 | vdb-entryx_refsource_BID |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Nov 2, 2005
Updated Aug 7, 2024
Reserved Nov 1, 2005
Link CVE-2005-3409
CISA Vulnrichment
Updated n/a