How severe is CVE-2017-6403?

CVE-2017-6403 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-2017-6403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-6403?

CVE-2017-6403 primarily affects Veritas Netbackup. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-6403?

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-2017-6403 published?

CVE-2017-6403 was published on 2017-03-02 and last updated on 2026-06-17.

CVE-2017-6403

CVE-2017-6403 is a critical-severity vulnerability in Veritas Netbackup with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 27% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 27% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Veritas Netbackup
Published: 2017-03-02
Last modified: 2026-06-17

Description

An issue was discovered in Veritas NetBackup Before 8.0 and NetBackup Appliance Before 3.0. NetBackup Cloud Storage Service uses a hardcoded username and password.

Frequently asked questions

What is CVE-2017-6403?: An issue was discovered in Veritas NetBackup Before 8.0 and NetBackup Appliance Before 3.0. NetBackup Cloud Storage Service uses a hardcoded username and password.
How severe is CVE-2017-6403?: CVE-2017-6403 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-2017-6403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-6403?: CVE-2017-6403 primarily affects Veritas Netbackup. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-6403?: 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-2017-6403 published?: CVE-2017-6403 was published on 2017-03-02 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:veritas:netbackup:*:*:*:*:*:*:*:*
cpe:2.3:a:veritas:netbackup_appliance:*:*:*:*:*:*:*:*

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