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CVE-2021-3152

29
FAUCET Score

CVE-2021-3152 describes a directory traversal vulnerability in Home Assistant versions prior to 2021.1.3, specifically impacting third-party custom integrations. This medium-severity vulnerability (CVSS 5.3) allows an unauthenticated attacker to potentially read sensitive files (C:L) on the system with low attack complexity, although the vendor attributes the core issue to the custom integrations themselves. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2021.1.3CPE matchmatch criteria
cpe:2.3:a:home-assistant:home-assistant:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.23%
Probability of exploitation in next 30 days
EPSS Percentile
80.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Nuclei: CVE-2021-3152 · Apr 22, 2026
This CVE's current EPSS score of 0.0223 is in the 71st percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Remediation records are not available for this CVE.

References

home-assistant.io / blog/2021/01/14/security-bulletin
Vendor Advisory
home-assistant.io / blog/2021/01/22/security-disclosure
Vendor Advisory