CVE-2021-21954: A command execution vulnerability exists in the wifi_country_code_update functionality of the home_security bi

This week

CRITICAL 9.9MITIGATE

CVE-2021-21954 is a critical-severity flaw (CVSS 9.9) affecting eufy homebase 2 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A command execution vulnerability exists in the wifi_country_code_update functionality of the home_security binary of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted set of network packets can lead to arbitrary command execution.

Why this priority

Critical severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Weakness	CWE-78
Published	2021-12-09
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: anker

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-12-09 16:15 UTCPublished CVE record published
2026-06-17 03:36 UTCUpdated Record last modified

anker eufy homebase 2 firmware MITIGATE

Affected: 2.1.6.9h

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.1.6.9h

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-21954?

eufy homebase 2 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-21954 being exploited?

CVE-2021-21954 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-21954 affect?

CVE-2021-21954 affects eufy homebase 2 firmware. Severity is critical (CVSS 9.9). A command execution vulnerability exists in the wifi_country_code_update functionality of the home_security binary of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted set of network packets can lead to arbitrary command execution.

How urgent is CVE-2021-21954?

Priority 61/100. Critical severity; Public exploit reference

Software pages

Wi-Fi vulnerabilities

Related CVEs

CVE-2022-29503 CRITICAL 9.8 DOWNGRADE DOWNGRADE A memory corruption vulnerability exists in the libpthread linuxthreads functionality of uClibC 0.9.33.2 and u
CVE-2022-26073 MEDIUM 6.5 MITIGATE A denial of service vulnerability exists in the libxm_av.so DemuxCmdInBuffer functionality of Anker Eufy Homeb
CVE-2022-25989 HIGH 8.8 MITIGATE An authentication bypass vulnerability exists in the libxm_av.so getpeermac() functionality of Anker Eufy Home
CVE-2022-21806 CRITICAL 9.8 MITIGATE A use-after-free vulnerability exists in the mips_collector appsrv_server functionality of Anker Eufy Homebase
CVE-2021-21955 HIGH 7.5 MITIGATE An authentication bypass vulnerability exists in the get_aes_key_info_by_packetid() function of the home_secur

References

← Back to latest CVEs