How severe is CVE-2016-6903?

CVE-2016-6903 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-6903 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6903?

CVE-2016-6903 affects Lshell Project Lshell. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-6903?

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-2016-6903 published?

CVE-2016-6903 was published on 2017-04-24 and last updated on 2026-06-17.

CVE-2016-6903

CVE-2016-6903 is a critical-severity vulnerability in Lshell Project Lshell with a CVSS 3.x base score of 9.9. 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-264.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
CVSS v2: 9.0
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Lshell Project Lshell
Published: 2017-04-24
Last modified: 2026-06-17

Description

lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.

Frequently asked questions

What is CVE-2016-6903?: lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.
How severe is CVE-2016-6903?: CVE-2016-6903 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-6903 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6903?: CVE-2016-6903 affects Lshell Project Lshell. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-6903?: 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-2016-6903 published?: CVE-2016-6903 was published on 2017-04-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:lshell_project:lshell:0.9.16:*:*:*:*:*:*:*

More vulnerabilities in Lshell Project Lshell

CVE-2016-6902 — Critical (CVSS 9.9): lshell 0.9.16 allows remote authenticated users to break out of a limited shell and execute arbitrary commands.

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