CVE-2022-21806Public exploitNetwork attack vector

Unauthenticated code execution via unjoined receive thread

Published Jun 17, 2022 · Updated Apr 15, 2025

Use-after-free in Anker Innovations eufy HomeBase 2 2.1.8.5h allows remote attackers to execute code via crafted network packets. The appsrv_server on TCP port 5000 cancels a receive thread without joining it, then frees shared resources that the still-running thread accesses. Repeated unauthenticated connections and disconnects accumulate delayed threads, enabling memory corruption and a crash or code execution.

CVSS severity10.0
Critical
EPSS probability2.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in Anker Innovations eufy HomeBase 2 2.1.8.5h allows remote attackers to execute code via crafted network packets. The appsrv_server on TCP port 5000 cancels a receive thread without joining it, then frees shared resources that the still-running thread accesses. Repeated unauthenticated connections and disconnects accumulate delayed threads, enabling memory corruption and a crash or code execution.

The record

CVE
CVE-2022-21806
Published
Jun 17, 2022
Updated
Apr 15, 2025
Vendor
Anker Innovations
Product
eufy HomeBase 2
Classifications
CWE-416, CWE-368, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.1.8.5h

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Anker Innovations · eufy HomeBase 2version=2.1.8.5h

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0Cisco TalosCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-416Use After Free
CWE-368Context Switching Race Condition
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo