What is CVE-2021-3555?

CVE-2021-3555 is a high-severity vulnerability in Eufy Indoor 2k Camera, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.6/10. Published 2022-05-31.

How severe is CVE-2021-3555?

High severity. CVSS v3 base score is 7.6 out of 10.

Buffer overflow in Eufy Indoor 2k Camera

CVE-2021-3555

A Buffer Overflow vulnerability in the RSTP server component of Eufy Indoor 2K Indoor Camera allows a local attacker to achieve remote code execution. This issue affects: Eufy Indoor 2K Indoor Camera 2.0.9.3 version and prior versions.

Vulnerability class: Buffer Overflow

Published 2022-05-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Eufy Indoor 2k Camera — versions unspecified
Eufylife Solo Indoorcam C24
Eufylife Solo Indoorcam C24 Firmware
Eufylife Solo Indoorcam P24
Eufylife Solo Indoorcam P24 Firmware

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

www.bitdefender.com/blog/labs/vulnerabilities-identified-in-eufy2k-indoor-camer… (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-3555?: CVE-2021-3555 is a high-severity vulnerability in Eufy Indoor 2k Camera, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.6/10. Published 2022-05-31.
How severe is CVE-2021-3555?: High severity. CVSS v3 base score is 7.6 out of 10.