How severe is CVE-2016-6402?

CVE-2016-6402 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-2016-6402 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6402?

CVE-2016-6402 primarily affects Cisco Unified Computing System. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6402?

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-2016-6402 published?

CVE-2016-6402 was published on 2016-09-18 and last updated on 2026-06-17.

CVE-2016-6402

CVE-2016-6402 is a high-severity vulnerability in Cisco Unified Computing System 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-264.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Cisco Unified Computing System
Published: 2016-09-18
Last modified: 2026-06-17

Description

UCS Manager and UCS 6200 Fabric Interconnects in Cisco Unified Computing System (UCS) through 3.0(2d) allow local users to obtain OS root access via crafted CLI input, aka Bug ID CSCuz91263.

Frequently asked questions

What is CVE-2016-6402?: UCS Manager and UCS 6200 Fabric Interconnects in Cisco Unified Computing System (UCS) through 3.0(2d) allow local users to obtain OS root access via crafted CLI input, aka Bug ID CSCuz91263.
How severe is CVE-2016-6402?: CVE-2016-6402 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-2016-6402 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6402?: CVE-2016-6402 primarily affects Cisco Unified Computing System. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6402?: 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-2016-6402 published?: CVE-2016-6402 was published on 2016-09-18 and last updated on 2026-06-17.

References

Affected products (28)

cpe:2.3:a:cisco:unified_computing_system:2.2\(1b\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(1c\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(1d\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(1e\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(1f\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(1g\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(1h\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(2c\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(2c\)a:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(2d\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(2e\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(3a\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(3b\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(3c\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(3d\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(3e\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(3f\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(3g\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(4b\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(4c\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(5a\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2\(5b\)a:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:2.2_base:*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:3.0\(1c\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:3.0\(1d\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:3.0\(1e\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:3.0\(2c\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:unified_computing_system:3.0\(2d\):*:*:*:*:*:*:*

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