How severe is CVE-2018-3934?

CVE-2018-3934 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-3934 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3934?

CVE-2018-3934 affects Yitechnology Yi Home Camera Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-3934?

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

When was CVE-2018-3934 published?

CVE-2018-3934 was published on 2018-11-02 and last updated on 2026-06-17.

CVE-2018-3934

CVE-2018-3934 is a critical-severity vulnerability in Yitechnology Yi Home Camera Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Yitechnology Yi Home Camera Firmware
Published: 2018-11-02
Last modified: 2026-06-17

Description

An exploitable code execution vulnerability exists in the firmware update functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted set of UDP packets can cause a logic flaw, resulting in an authentication bypass. An attacker can sniff network traffic and send a set of packets to trigger this vulnerability.

Frequently asked questions

What is CVE-2018-3934?: An exploitable code execution vulnerability exists in the firmware update functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted set of UDP packets can cause a logic flaw, resulting in an authentication bypass. An attacker can sniff network traffic and send a set of packets to trigger this vulnerability.
How severe is CVE-2018-3934?: CVE-2018-3934 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-3934 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-3934?: CVE-2018-3934 affects Yitechnology Yi Home Camera Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-3934?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-3934 published?: CVE-2018-3934 was published on 2018-11-02 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0601

Affected products (1)

cpe:2.3:o:yitechnology:yi_home_camera_firmware:1.8.7.0d:*:*:*:*:*:*:*

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CVE-2018-3935 — High (CVSS 7.5): An exploitable code execution vulnerability exists in the UDP network functionality of Yi Home Camera 27US 1.8.7.0D. A…
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