CVE-2017-8691

Name: CVE-2017-8691
Creator: NVD / NIST
Published: 2017-08-08T21:29:01.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 19.77%

Last modified Jun 17, 2026

CVE-2017-8691 is a vulnerability of currently unknown severity. Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allow an attacker to execute code remotely on a target system when the Windows font library fails to properly handle specially crafted embedded fonts, aka "Express Compressed Fonts Remote Code Execution Vulnerability.". EPSS estimates a 19.77% chance of exploitation in the next 30 days.

Description

Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allow an attacker to execute code remotely on a target system when the Windows font library fails to properly handle specially crafted embedded fonts, aka "Express Compressed Fonts Remote Code Execution Vulnerability."

Metrics

EPSS Probability

19.77%

97.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions	Update
Microsoft	Windows 7	All versions	Sp1
Microsoft	Windows Server 2008	All versions	Sp2
Microsoft	Windows Server 2008	r2	Sp1

References

http://www.securityfocus.com/bid/100090Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039096Third Party Advisory, VDB Entry
https://fortiguard.com/zeroday/FG-VD-17-142
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8691Patch, Vendor Advisory
http://www.securityfocus.com/bid/100090Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039096Third Party Advisory, VDB Entry
https://fortiguard.com/zeroday/FG-VD-17-142
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8691Patch, Vendor Advisory

Timeline

Published: Aug 8, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-8691?

How severe is CVE-2017-8691?

Severity scoring for CVE-2017-8691 is pending analysis. The EPSS model estimates a 19.77% probability of exploitation in the next 30 days.

How do I fix CVE-2017-8691?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-8691?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST