CVE-2016-7256 : atmfd.dll in the Windows font library in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1,

atmfd.dll in the Windows font library in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, and 1607, and Windows Server 2016 allows remote attackers to execute arbitrary code via a crafted web site, aka "Open Type Font Remote Code Execution Vulnerability."

Published 2016-11-10 07:00:11

Updated 2018-10-12 22:14:27

Source Microsoft Corporation

View at NVD, CVE.org

Vulnerability category: Execute codeBypassGain privilege

CVE-2016-7256 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

Microsoft Windows Open Type Font Remote Code Execution Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA description:

A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted embedded fonts. An attacker who successfully exploits this vulnerability could take control of the affected system.

Added on 2022-05-25 Action due date 2022-06-15

Exploit prediction scoring system (EPSS) score for CVE-2016-7256

Probability of exploitation activity in the next 30 days: 46.81%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 97 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2016-7256

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
9.3	HIGH	AV:N/AC:M/Au:N/C:C/I:C/A:C	8.6	10.0	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
8.8	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	2.8	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2016-7256

CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-7256

https://twitter.com/da5ch0/status/820161895269277696

dash cHVuY2ggbmF6aXM= on Twitter: "for CVE-2016-7256, the parsing is done now in a less privileged context in AC, but fonts aren't always intercepted by AC… "
http://www.securitytracker.com/id/1037243

Microsoft Graphics Component Flaws Let Remote Users Execute Arbitrary Code and Obtain Potentially Sensitive Information - SecurityTracker

CVEs referencing this url
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-132

Microsoft Security Bulletin MS16-132 - Critical | Microsoft Docs

CVEs referencing this url
http://www.securityfocus.com/bid/94156

Microsoft Windows Open Type Font CVE-2016-7256 Remote Code Execution Vulnerability

Products affected by CVE-2016-7256