How severe is CVE-2021-41388?

CVE-2021-41388 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-2021-41388 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41388?

CVE-2021-41388 affects Netskope. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41388?

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-2021-41388 published?

CVE-2021-41388 was published on 2022-01-04 and last updated on 2026-06-17.

CVE-2021-41388

CVE-2021-41388 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Netskope
Published: 2022-01-04
Last modified: 2026-06-17

Description

Netskope client prior to 89.x on macOS is impacted by a local privilege escalation vulnerability. The XPC implementation of nsAuxiliarySvc process does not perform validation on new connections before accepting the connection. Thus any low privileged user can connect and call external methods defined in XPC service as root, elevating their privilege to the highest level.

Frequently asked questions

What is CVE-2021-41388?: Netskope client prior to 89.x on macOS is impacted by a local privilege escalation vulnerability. The XPC implementation of nsAuxiliarySvc process does not perform validation on new connections before accepting the connection. Thus any low privileged user can connect and call external methods defined in XPC service as root, elevating their privilege to the highest level.
How severe is CVE-2021-41388?: CVE-2021-41388 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-2021-41388 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41388?: CVE-2021-41388 affects Netskope. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41388?: 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-2021-41388 published?: CVE-2021-41388 was published on 2022-01-04 and last updated on 2026-06-17.

References

https://www.netskope.com/company/security-compliance-and-assurance/netskope-security-advisory-nskpsa-2021-002

Affected products (1)

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

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