How severe is CVE-2015-6389?

CVE-2015-6389 has a CVSS 2.0 base score of 9.0, rated critical severity.

Is CVE-2015-6389 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6389?

CVE-2015-6389 primarily affects Cisco Prime Collaboration Assurance. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-6389?

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-2015-6389 published?

CVE-2015-6389 was published on 2015-12-13 and last updated on 2026-06-17.

CVE-2015-6389

CVE-2015-6389 is a critical-severity vulnerability in Cisco Prime Collaboration Assurance with a CVSS 2.0 base score of 9.0. 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-287.

Key facts

Severity: Critical (CVSS 2.0 base score 9.0)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Cisco Prime Collaboration Assurance
Published: 2015-12-13
Last modified: 2026-06-17

Description

Cisco Prime Collaboration Assurance before 11.0 has a hardcoded cmuser account, which allows remote attackers to obtain access by establishing an SSH session and leveraging knowledge of this account's password, aka Bug ID CSCus62707.

Frequently asked questions

What is CVE-2015-6389?: Cisco Prime Collaboration Assurance before 11.0 has a hardcoded cmuser account, which allows remote attackers to obtain access by establishing an SSH session and leveraging knowledge of this account's password, aka Bug ID CSCus62707.
How severe is CVE-2015-6389?: CVE-2015-6389 has a CVSS 2.0 base score of 9.0, rated critical severity.
Is CVE-2015-6389 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-6389?: CVE-2015-6389 primarily affects Cisco Prime Collaboration Assurance. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-6389?: 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-2015-6389 published?: CVE-2015-6389 was published on 2015-12-13 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:cisco:prime_collaboration_assurance:10.5.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:prime_collaboration_assurance:10.6.0:*:*:*:*:*:*:*

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