How severe is CVE-2019-12091?

CVE-2019-12091 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-12091 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12091?

CVE-2019-12091 affects Netskope. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12091?

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-2019-12091 published?

CVE-2019-12091 was published on 2019-09-26 and last updated on 2026-06-17.

CVE-2019-12091

CVE-2019-12091 is a high-severity vulnerability in Netskope with a CVSS 3.x base score of 7.8. 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 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Netskope
Published: 2019-09-26
Last modified: 2026-06-17

Description

The Netskope client service, v57 before 57.2.0.219 and v60 before 60.2.0.214, running with NT\SYSTEM privilege, accepts network connections from localhost. The connection handling function in this service suffers from command injection vulnerability. Local users can use this vulnerability to execute code with NT\SYSTEM privilege.

Frequently asked questions

What is CVE-2019-12091?: The Netskope client service, v57 before 57.2.0.219 and v60 before 60.2.0.214, running with NT\SYSTEM privilege, accepts network connections from localhost. The connection handling function in this service suffers from command injection vulnerability. Local users can use this vulnerability to execute code with NT\SYSTEM privilege.
How severe is CVE-2019-12091?: CVE-2019-12091 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-12091 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12091?: CVE-2019-12091 affects Netskope. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12091?: 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-2019-12091 published?: CVE-2019-12091 was published on 2019-09-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:netskope:netskope:*:*:*:*:*:*:*:*

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