The TCP stack (tcp_input.c) in OpenBSD 3.5 and 3.6 allows remote attackers to cause a denial of service (system panic) via crafted values in the TCP timestamp option, which causes invalid arguments to be used when calculating the retransmit timeout
Published Mar 13, 2005
5.0
MEDIUMCVSS 2.0
EPSS 1.57%
Description
The TCP stack (tcp_input.c) in OpenBSD 3.5 and 3.6 allows remote attackers to cause a denial of service (system panic) via crafted values in the TCP timestamp option, which causes invalid arguments to be used when calculating the retransmit timeout.
Affected products
No data.
- 2.0
- 2.1
- 2.2
- 2.3
- 2.4
- 2.5
- 2.6
- 2.7
- 2.8
- 2.9
- 3.0
- 3.1
- 3.2
- 3.3
- 3.4
- 3.5
- 3.6
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.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.57% (0.01568) | 74.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.57% (0.01568) | 72.04th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.92% (0.00915) | 74.27th | v4 (v2025.03.14) |
| Dec 17, 2024 | 1.20% (0.01198) | 84.89th | v3 (v2023.03.01) |
| Feb 18, 2024 | 4.44% (0.04436) | 92.12th | v3 (v2023.03.01) |
| Jul 3, 2023 | 8.30% (0.08304) | 93.46th | v3 (v2023.03.01) |
| Mar 7, 2023 | 11.29% (0.11293) | 94.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
No CWE recorded.
References (4)
- http://secunia.com/advisories/13819 third-party-advisoryx_refsource_SECUNIA
- http://securitytracker.com/id?1012861 vdb-entryx_refsource_SECTRACKPatchVendor Advisory
- http://www.openbsd.org/errata35.html vendor-advisoryx_refsource_OPENBSDPatchVendor Advisory
- http://www.securityfocus.com/bid/12250 vdb-entryx_refsource_BIDExploitPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/13819 | third-party-advisoryx_refsource_SECUNIA | |
| http://securitytracker.com/id?1012861 | vdb-entryx_refsource_SECTRACKPatchVendor Advisory | |
| http://www.openbsd.org/errata35.html | vendor-advisoryx_refsource_OPENBSDPatchVendor Advisory | |
| http://www.securityfocus.com/bid/12250 | vdb-entryx_refsource_BIDExploitPatchVendor Advisory |
Change history (0)
No recorded changes yet.