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CVE-2020-17109

28
FAUCET Score

CVE-2020-17109 is a remote code execution vulnerability affecting Microsoft HEVC Video Extensions. An attacker could exploit this by tricking a user into opening a specially crafted file, leading to high impact on confidentiality, integrity, and availability. While rated with a CVSS score of 7.8 (HIGH) and a FAUCET Risk Score of 75/100, there is no known public exploit code, it is not in the KEV catalog, and it is not considered actively exploited. Despite limited community discussion, it received media coverage as part of Microsoft's November 2020 Patch Tuesday.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.32763.0CPE matchmatch criteria
cpe:2.3:a:microsoft:hevc_video_extensions:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.95%
Probability of exploitation in next 30 days
EPSS Percentile
89.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0395 is in the 90th percentile among its peer group of 11,621 CVEs.

Social Chatter

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

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

microsoft2020-Nov/CVE-2020-17109Critical

HEVC Video Extensions Remote Code Execution Vulnerability

Nov 10, 2020

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2020-17109
PatchVendor Advisory