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CVE-2015-6389

23
FAUCET Score

CVE-2015-6389 describes a critical vulnerability in Cisco Prime Collaboration Assurance versions prior to 11.0, stemming from a hardcoded 'cmuser' account. This flaw allows unauthenticated remote attackers to gain full access to affected systems by establishing an SSH session and utilizing the known password for this account. With a CVSS score of 9.0, the vulnerability is easily exploitable over the network with low complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
10.5.1CPE matchmatch criteria
cpe:2.3:a:cisco:prime_collaboration_assurance:10.5.1:*:*:*:*:*:*:*
10.6.0CPE matchmatch criteria
cpe:2.3:a:cisco:prime_collaboration_assurance:10.6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.0HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:C

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
8.5
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.60%
Probability of exploitation in next 30 days
EPSS Percentile
83.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0260 is in the 71st percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20151209-pca
Vendor Advisory
securityfocus.com / bid/78738
securitytracker.com / id/1034361