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CVE-2016-6440

22
FAUCET Score

CVE-2016-6440 describes a clickjacking vulnerability in Cisco Unified Communications Manager (CUCM) where data displayed within an iframe could be manipulated. This medium-severity vulnerability (CVSS 6.5) has a low attack complexity and requires user interaction, potentially leading to high integrity impact but no confidentiality or availability impact. While no public exploits or Metasploit modules are available, and community discussion is minimal, organizations using affected CUCM versions should apply the provided fixes to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
11.5\(0.99838.4\)CPE matchmatch criteria
cpe:2.3:a:cisco:unified_communications_manager:11.5\(0.99838.4\):*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.05%
Probability of exploitation in next 30 days
EPSS Percentile
60.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0105 is in the 73rd percentile among its peer group of 26,219 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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-20161012-ucm
Vendor Advisory
securityfocus.com / bid/93521
securitytracker.com / id/1037005