Buffer overflow in Microsoft Windows 7
CVE-2017-8691
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."
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.198 (97.3th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.198 · newest: 0.198 · change: 0.000
Affected products
- Microsoft Windows 7
- Microsoft Windows Server 2008 — versions r2
- Microsoft Corporation Windows Kernel-Mode Drivers — versions Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1
Weakness classification (CWE)
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8691 (Patch, Vendor Advisory)
- www.securityfocus.com/bid/100090 (VDB Entry, Third Party Advisory, vdb-entry)
- fortiguard.com/zeroday/FG-VD-17-142
- www.securitytracker.com/id/1039096 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-8691?
- CVE-2017-8691 is a high-severity vulnerability in Microsoft Windows 7, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-08-08.
- How severe is CVE-2017-8691?
- High severity. CVSS v3 base score is 8.8 out of 10.