How severe is CVE-2016-9040?

CVE-2016-9040 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-9040 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-9040?

CVE-2016-9040 affects Joyent Smartos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-9040?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-9040 published?

CVE-2016-9040 was published on 2018-09-07 and last updated on 2026-06-17.

CVE-2016-9040

CVE-2016-9040 is a medium-severity vulnerability in Joyent Smartos with a CVSS 3.x base score of 5.5. 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.9
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Joyent Smartos
Published: 2018-09-07
Last modified: 2026-06-17

Description

An exploitable denial of service exists in the the Joyent SmartOS OS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFSADDENTRIES when used with a 32 bit model. An attacker can cause a buffer to be allocated and never freed. When repeatedly exploit this will result in memory exhaustion, resulting in a full system denial of service.

Frequently asked questions

What is CVE-2016-9040?: An exploitable denial of service exists in the the Joyent SmartOS OS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFSADDENTRIES when used with a 32 bit model. An attacker can cause a buffer to be allocated and never freed. When repeatedly exploit this will result in memory exhaustion, resulting in a full system denial of service.
How severe is CVE-2016-9040?: CVE-2016-9040 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-9040 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-9040?: CVE-2016-9040 affects Joyent Smartos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-9040?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-9040 published?: CVE-2016-9040 was published on 2018-09-07 and last updated on 2026-06-17.

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2016-0258

Affected products (1)

cpe:2.3:o:joyent:smartos:20161110t013148z:*:*:*:*:*:*:*

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