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CVE-2018-3920

22
FAUCET Score

CVE-2018-3920 is a code execution vulnerability affecting the firmware update functionality of the Yi Home Camera 27US (firmware version 1.8.7.0D). An attacker can achieve code execution by inserting an SD card containing a specially crafted 7-Zip file, which exploits a CRC collision during the firmware update process. This vulnerability has a CVSS score of 6.8 (Medium), indicating a high impact on confidentiality, integrity, and availability, with an attack vector requiring physical access. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.7.0dCPE matchmatch criteria
cpe:2.3:o:yitechnology:yi_home_camera_firmware:1.8.7.0d:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.6HIGH

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.59%
Probability of exploitation in next 30 days
EPSS Percentile
44.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 83rd percentile among its peer group of 1,532 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

talosintelligence.com / vulnerability_reports/TALOS-2018-0584
ExploitThird Party Advisory