How severe is CVE-2016-8439?

CVE-2016-8439 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-2016-8439 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-8439?

CVE-2016-8439 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-8439?

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-2016-8439 published?

CVE-2016-8439 was published on 2017-01-12 and last updated on 2026-06-17.

CVE-2016-8439

CVE-2016-8439 is a critical-severity vulnerability in Linux Linux Kernel 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. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Linux Linux Kernel
Published: 2017-01-12
Last modified: 2026-06-17

Description

Possible buffer overflow in trust zone access control API. Buffer overflow may occur due to lack of buffer size checking. Product: Android. Versions: Kernel 3.18. Android ID: A-31625204. References: QC-CR#1027804.

Frequently asked questions

What is CVE-2016-8439?: Possible buffer overflow in trust zone access control API. Buffer overflow may occur due to lack of buffer size checking. Product: Android. Versions: Kernel 3.18. Android ID: A-31625204. References: QC-CR#1027804.
How severe is CVE-2016-8439?: CVE-2016-8439 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-2016-8439 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-8439?: CVE-2016-8439 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-8439?: 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-2016-8439 published?: CVE-2016-8439 was published on 2017-01-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:linux:linux_kernel:3.18:*:*:*:*:*:*:*

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