How severe is CVE-2021-3555?

CVE-2021-3555 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-3555 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3555?

CVE-2021-3555 primarily affects Eufylife Solo Indoorcam C24 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-3555?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-3555 published?

CVE-2021-3555 was published on 2022-05-31 and last updated on 2026-06-17.

CVE-2021-3555

CVE-2021-3555 is a high-severity vulnerability in Eufylife Solo Indoorcam C24 Firmware with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.

Key facts

Severity: High (CVSS 3.x base score 7.6)
CVSS v2: 5.4
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Eufylife Solo Indoorcam C24 Firmware
Published: 2022-05-31
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-3555?: CVE-2021-3555 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-3555 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3555?: CVE-2021-3555 primarily affects Eufylife Solo Indoorcam C24 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-3555?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-3555 published?: CVE-2021-3555 was published on 2022-05-31 and last updated on 2026-06-17.

References

https://www.bitdefender.com/blog/labs/vulnerabilities-identified-in-eufy2k-indoor-camera/

Affected products (2)

cpe:2.3:o:eufylife:solo_indoorcam_c24_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:eufylife:solo_indoorcam_p24_firmware:*:*:*:*:*:*:*:*

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