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CVE-2015-2504

34
FAUCET Score

CVE-2015-2504 is a critical elevation of privilege vulnerability affecting multiple versions of the Microsoft .NET Framework. It stems from improper object counting during array copy operations, allowing remote attackers to execute arbitrary code via crafted XAML browser applications (XBAP) or bypass Code Access Security restrictions through malicious .NET Framework applications. With a CVSS score of 9.3, this vulnerability is highly severe, requiring medium attack complexity but leading to complete compromise of confidentiality, integrity, and availability. While there is no public exploit code available in Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered significant community discussion and media coverage, including reports of it being exploited in the wild.

Impacted Technologies

VendorProductVersion(s)CPE
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:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:4.0:*:*:*:*:*:*:*
4.5CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:4.5:*:*:*:*:*:*:*

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
21.02%
Probability of exploitation in next 30 days
EPSS Percentile
97.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2102 is in the 87th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 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

docs.microsoft.com / en-us/security-updates/securitybulletins/2015/ms15-101
securityfocus.com / bid/76560
securitytracker.com / id/1033493