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CVE-2014-0257

78
FAUCET Score

CVE-2014-0257 is a critical "Type Traversal Vulnerability" in multiple versions of Microsoft .NET Framework (1.0 SP3 through 4.5.1) that allows remote attackers to execute arbitrary code. This vulnerability stems from the framework's failure to properly determine the safety of method execution. With a CVSS score of 9.3, it is highly severe, indicating a network-based attack with medium complexity, leading to complete compromise of confidentiality, integrity, and availability. While not listed in CISA KEV, a Metasploit module (MS14-009) and an ExploitDB entry exist, suggesting exploitability, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:1.0:sp3:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:1.1:sp1:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
3.5CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
69.69%
Probability of exploitation in next 30 days
EPSS Percentile
99.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Metasploit: MS14-009 .NET Deployment Service IE Sandbox Escape · Feb 11, 2014
ExploitDB: EDB-33892 · Jun 27, 2014
This CVE's current EPSS score of 0.6969 is in the 99th percentile among its peer group of 8,914 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/127246/MS14-009-.NET-Deployment-Service-IE-Sandbox-Escape.html
docs.microsoft.com / en-us/security-updates/securitybulletins/2014/ms14-009
secunia.com / advisories/56793
exploit-db.com / exploits/33892
osvdb.org / 103163
securityfocus.com / bid/65417
securitytracker.com / id/1029745