CVE-2021-3555

A Buffer Overflow vulnerability in the RSTP server component of Eufy Indoor 2K Indoor Camera...

7.6 High

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.

Attack profile

How easy it is to exploit

Attack vector: Adjacent network
Complexity: High
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.87%Down 1.8 points since Jun 1, 2022

What each source reports

CVE List Score used 7.6

Record: CVE-2021-3555
CVSS 3.1: 7.6 HighCVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

EUVDEUVD-2021-26866 7.6

Record: EUVD-2021-26866
CVSS 3.1: 7.6 HighCVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mg3c-6fqg-8j8h 8.8

A Buffer Overflow vulnerability in the RSTP server component of Eufy Indoor 2K Indoor Camera...

Record: GHSA-mg3c-6fqg-8j8h
CVSS 3.1: 8.8 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

NVD 7.6

Record: CVE-2021-3555
CVSS 3.1: 7.6 HighCVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 3.1: 8.8 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 5.4 MediumAV:A/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-120
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-3555 is a high vulnerability (CVSS 7.6) in Eufy Indoor 2k Indoor Camera, published May 31, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.87%, the 59th percentile. No source names a fixed version.