CVE-2021-3555

HIGHNVD 7.68.8▲Trending — 4 sources updated this week

7.6

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.

CVSS v3: 7.6
EG Score: 8.8(medium)
EPSS: 54.4%
KEV: Not listed

Published

May 31, 2022

Last Modified

November 21, 2024

References (2)

cve-requests@bitdefenderhttps://www.bitdefender.com/blog/labs/vulnerabilities-identified-in-eufy2k-indoor-camera/
af854a3a-2127-422b-91ae-364da2661108https://www.bitdefender.com/blog/labs/vulnerabilities-identified-in-eufy2k-indoor-camera/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

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

Data Freshness Timeline

(refreshed 12× in last 7d / 12× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 21:24 UTCEG score recompute
2026-05-25 21:24 UTCGHSA enrichment
2026-05-25 08:16 UTCOSV refresh

Frequently asked(5)

What is CVE-2021-3555?

CVE-2021-3555 is a high vulnerability published on May 31, 2022. 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.

When was CVE-2021-3555 disclosed?

CVE-2021-3555 was first published in the National Vulnerability Database on May 31, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-3555 actively exploited?

CVE-2021-3555 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 54.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-3555?

CVE-2021-3555 has a CVSS v3 base score of 7.6 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.8.

How do I remediate CVE-2021-3555?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-3555, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-3555

📅 Published

🔄 Last Modified

🔗 References (2)