How severe is CVE-2017-8859?

CVE-2017-8859 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-2017-8859 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8859?

CVE-2017-8859 primarily affects Veritas Netbackup Appliance. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-8859?

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-2017-8859 published?

CVE-2017-8859 was published on 2017-05-09 and last updated on 2026-06-17.

CVE-2017-8859

CVE-2017-8859 is a critical-severity vulnerability in Veritas Netbackup Appliance 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.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Veritas Netbackup Appliance
Published: 2017-05-09
Last modified: 2026-06-17

Description

In Veritas NetBackup Appliance 3.0 and earlier, unauthenticated users can execute arbitrary commands as root.

Frequently asked questions

What is CVE-2017-8859?: In Veritas NetBackup Appliance 3.0 and earlier, unauthenticated users can execute arbitrary commands as root.
How severe is CVE-2017-8859?: CVE-2017-8859 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-2017-8859 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8859?: CVE-2017-8859 primarily affects Veritas Netbackup Appliance. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-8859?: 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-2017-8859 published?: CVE-2017-8859 was published on 2017-05-09 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:veritas:netbackup_appliance:*:*:*:*:*:*:*:*
cpe:2.3:a:veritas:netbackup_appliance:2.7.3:*:*:*:*:*:*:*
cpe:2.3:a:veritas:netbackup_appliance:3.0:*:*:*:*:*:*:*

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