CVE-2005-0740 json
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 i…
published 2005-01-13 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-0741
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- openbsd.org/errata35.html advisory
- securitytracker.com/id?1012861 advisory
- securityfocus.com/bid/12250 advisory
Exploit prediction
1.57% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- securityfocus.com http://www.securityfocus.com/bid/12250 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
References
-
openbsd.org
/errata35.html
vendor-advisory, patch
-
securitytracker.com
/id?1012861
vdb-entry, patch, vendor-advisory
-
securityfocus.com
/bid/12250
vdb-entry, exploit, patch, vendor-advisory
-
secunia.com
/advisories/13819
third-party-advisory
Sources
- CVE List CVE-2005-0740
- NVD CVE-2005-0740
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