CVE-2014-0253

NONECVSS 0.0Elevated
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 39%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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."

CVSS v3
—
EG Score
0.0(none)
EPSS
98.4%
KEV
Not listed

Published

February 12, 2014

Last Modified

April 29, 2026

References (10)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 02:20 UTCEPSS rescore
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  3. 2026-07-04 06:27 UTCEPSS rescore
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  1. 2026-06-16 17:49 UTCEPSS rescore
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  21. 2026-05-31 00:14 UTCEPSS rescore
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  23. 2026-05-29 13:41 UTCEPSS rescore
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  25. 2026-05-28 20:24 UTCEG score recompute
  26. 2026-05-28 20:24 UTCGHSA enrichment
  27. 2026-05-28 13:42 UTCEPSS rescore
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  30. 2026-05-27 13:38 UTCEPSS rescore
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  43. 2026-05-18 21:29 UTCEPSS rescore
  44. 2026-05-18 21:29 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2014-0253?
CVE-2014-0253 is a none vulnerability published on February 12, 2014. 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)…
When was CVE-2014-0253 disclosed?
CVE-2014-0253 was first published in the National Vulnerability Database on February 12, 2014, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2014-0253 actively exploited?
CVE-2014-0253 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2014-0253?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-0253, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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