CVE-2014-0253 json
Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5, 3.5.1, 4, 4.5, and 4.5.1 does not properly determine TCP connection states, which allows re…
published 2014-02-12 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-0291
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 38.7%
- EPSS 38.7% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5, 3.5.1, 4, 4.5, and 4.5.1 does not properly determine TCP connection states, which allows remote attackers to cause a denial of service (ASP.NET daemon hang) via crafted HTTP requests that trigger persistent resource consumption for a (1) stale or (2) closed connection, as exploited in the wild in February 2014, aka "POST Request DoS Vulnerability."
Exploit prediction
38.70% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2014/ms14-009
vendor-advisory
-
securitytracker.com
/id/1029745
vdb-entry
-
osvdb.org
/103162
vdb-entry
-
securityfocus.com
/bid/65415
vdb-entry
-
secunia.com
/advisories/56793
third-party-advisory
Sources
- CVE List CVE-2014-0253
- NVD CVE-2014-0253
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.