How severe is CVE-2019-3986?

CVE-2019-3986 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-3986 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-3986?

CVE-2019-3986 affects Amazon Blink Xt2 Sync Module Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-3986?

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-2019-3986 published?

CVE-2019-3986 was published on 2019-12-11 and last updated on 2026-06-17.

CVE-2019-3986

CVE-2019-3986 is a high-severity vulnerability in Amazon Blink Xt2 Sync Module Firmware with a CVSS 3.x base score of 8.8. 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 8.3
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Amazon Blink Xt2 Sync Module Firmware
Published: 2019-12-11
Last modified: 2026-06-17

Description

Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due to improperly sanitized input when configuring the devices wifi configuration via the encryption parameter.

Frequently asked questions

What is CVE-2019-3986?: Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due to improperly sanitized input when configuring the devices wifi configuration via the encryption parameter.
How severe is CVE-2019-3986?: CVE-2019-3986 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-3986 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-3986?: CVE-2019-3986 affects Amazon Blink Xt2 Sync Module Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-3986?: 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-2019-3986 published?: CVE-2019-3986 was published on 2019-12-11 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2019-51

Affected products (1)

cpe:2.3:o:amazon:blink_xt2_sync_module_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Amazon Blink Xt2 Sync Module Firmware

CVE-2019-3984 — Critical (CVSS 9.8): Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due…
CVE-2019-3989 — Critical (CVSS 9.8): Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due…
CVE-2019-3988 — High (CVSS 8.8): Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due…
CVE-2019-3987 — High (CVSS 8.8): Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due…
CVE-2019-3985 — High (CVSS 8.8): Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary commands on the device due…
CVE-2019-3983 — Medium (CVSS 6.8): Blink XT2 Sync Module firmware prior to 2.13.11 allows remote attackers to execute arbitrary code and commands on the…

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