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CVE-2015-2456

52
FAUCET Score

CVE-2015-2456 is a critical remote code execution vulnerability affecting numerous Microsoft Windows versions, Office products, Lync, Silverlight, and .NET Framework. It allows attackers to execute arbitrary code by exploiting a flaw in TrueType font parsing. With a CVSS score of 9.3, this vulnerability is highly severe, requiring no authentication and having a high impact on confidentiality, integrity, and availability, though it has a medium attack complexity. While not listed in CISA's KEV catalog, an exploit for win32k.sys related to TTF font processing exists on ExploitDB, suggesting potential for exploitation despite limited community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*
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:*:*:*:*:*:*:*
4.5.1CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:4.5.1:*:*:*:*:*:*:*
4.5.2CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*

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
35.56%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
ExploitDB: EDB-37918 · Aug 21, 2015
This CVE's current EPSS score of 0.3556 is in the 96th percentile among its peer group of 8,915 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

No media coverage found for this CVE.

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/ms15-080
PatchVendor Advisory
exploit-db.com / exploits/37918
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/76241
Third Party AdvisoryVDB Entry
securitytracker.com / id/1033238
Third Party AdvisoryVDB Entry