CVE-2011-3414

Description

The CaseInsensitiveHashProvider.getHashCode function in the HashTable implementation in the ASP.NET subsystem in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5 SP1, 3.5.1, and 4.0 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters, aka "Collisions in HashTable May Cause DoS Vulnerability."

Key data

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score: 0.57687 (57.7% probability)
Percentile: 99.1%
Scores of: Nov 10, 2026
Model: v2026.06.15

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

oval:org.mitre.oval:def:14588 (oval.cisecurity.org)vdb-entrysignature
nruns.com/_downloads/advisory28122011.pdf
TA11-347A (us-cert.gov)third-party-advisory
MS11-100 (docs.microsoft.com)vendor-advisory
VU#903934 (kb.cert.org)third-party-advisory
20111228 n.runs-SA-2011.004 - web programming languages and platforms - DoS through hash table (archives.neohapsis.com)mailing-list
ocert.org/advisories/ocert-2011-003.html

Timeline

ID reservedSep 9, 2011
Record publishedDec 30, 2011
Record last updatedAug 6, 2024

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About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

Cloud VPS DDoS protection

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:46 UTC. Sources and licenses