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CVE-2016-20022

22
FAUCET Score

CVE-2016-20022 describes a Linux kernel vulnerability (before version 4.8) where the usb_parse_endpoint function fails to validate the wMaxPacketSize field in an endpoint descriptor, affecting only unsupported products. This high-severity vulnerability (CVSS 8.4) allows for local attacks with high impact on confidentiality, integrity, and availability. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current threat landscape.

Impacted Technologies

VendorProductVersion(s)CPE
N/AN/A
n/aCNA affected

CVSS Data

CVSS version used by this source: 3.1

8.4HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 17th percentile among its peer group of 3,241 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 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

Vendor Advisories (1)

redhatCVE-2016-20022Moderate

kernel: USB: improper validation of wMaxPacketValue entries in endpoint descriptors

Jun 28, 2024

References

github.com / torvalds/linux/commit/aed9d65ac3278d4febd8665bd7db59ef53e825fe
lore.kernel.org / lkml/1486322541-8206-8-git-send-email-w%401wt.eu
spinics.net / lists/linux-usb/msg144177.html