Vulnerability Monitor

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CVE-2021-1406


A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to access sensitive information on an affected device. The vulnerability is due to improper inclusion of sensitive information in downloadable files. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a specific set of commands. A successful exploit could allow the attacker to obtain hashed credentials of system users. To exploit this vulnerability an attacker would need to have valid user credentials with elevated privileges.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.9, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 1 product from cisco organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2021-04-08T04:15:12.593

Last Modified

2024-11-21T05:44:16.997

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.9 (MEDIUM)

CVSSv2 Vector

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

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: SINGLE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

8.0

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-538
  • Type: Primary
    CWE-200

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco unified_communications_manager 10.5\(2\) Yes
Application cisco unified_communications_manager 10.5\(2\) Yes
Application cisco unified_communications_manager 10.5\(2\)su1 Yes
Application cisco unified_communications_manager 10.5\(2\)su1 Yes
Application cisco unified_communications_manager 10.5\(2\)su2 Yes
Application cisco unified_communications_manager 10.5\(2\)su2 Yes
Application cisco unified_communications_manager 10.5\(2\)su2a Yes
Application cisco unified_communications_manager 10.5\(2\)su2a Yes
Application cisco unified_communications_manager 10.5\(2\)su3 Yes
Application cisco unified_communications_manager 10.5\(2\)su3 Yes
Application cisco unified_communications_manager 10.5\(2\)su3a Yes
Application cisco unified_communications_manager 10.5\(2\)su3a Yes
Application cisco unified_communications_manager 10.5\(2\)su4 Yes
Application cisco unified_communications_manager 10.5\(2\)su4 Yes
Application cisco unified_communications_manager 10.5\(2\)su4a Yes
Application cisco unified_communications_manager 10.5\(2\)su4a Yes
Application cisco unified_communications_manager 10.5\(2\)su5 Yes
Application cisco unified_communications_manager 10.5\(2\)su6 Yes
Application cisco unified_communications_manager 10.5\(2\)su6 Yes
Application cisco unified_communications_manager 10.5\(2\)su6a Yes
Application cisco unified_communications_manager 10.5\(2\)su6a Yes
Application cisco unified_communications_manager 10.5\(2\)su7 Yes
Application cisco unified_communications_manager 10.5\(2\)su7 Yes
Application cisco unified_communications_manager 10.5\(2\)su8 Yes
Application cisco unified_communications_manager 10.5\(2\)su8 Yes
Application cisco unified_communications_manager 10.5\(2\)su9 Yes
Application cisco unified_communications_manager 10.5\(2\)su9 Yes
Application cisco unified_communications_manager 10.5\(2\)su10 Yes
Application cisco unified_communications_manager 10.5\(2\)su10 Yes
Application cisco unified_communications_manager 11.5\(1\) Yes
Application cisco unified_communications_manager 11.5\(1\) Yes
Application cisco unified_communications_manager 11.5\(1\)su1 Yes
Application cisco unified_communications_manager 11.5\(1\)su1 Yes
Application cisco unified_communications_manager 11.5\(1\)su2 Yes
Application cisco unified_communications_manager 11.5\(1\)su2 Yes
Application cisco unified_communications_manager 11.5\(1\)su3 Yes
Application cisco unified_communications_manager 11.5\(1\)su3 Yes
Application cisco unified_communications_manager 11.5\(1\)su4 Yes
Application cisco unified_communications_manager 11.5\(1\)su4 Yes
Application cisco unified_communications_manager 11.5\(1\)su5 Yes
Application cisco unified_communications_manager 11.5\(1\)su5 Yes
Application cisco unified_communications_manager 11.5\(1\)su7 Yes
Application cisco unified_communications_manager 11.5\(1\)su7 Yes
Application cisco unified_communications_manager 11.5\(1\)su8 Yes
Application cisco unified_communications_manager 11.5\(1\)su8 Yes
Application cisco unified_communications_manager 11.5\(1\)su9 Yes
Application cisco unified_communications_manager 11.5\(1\)su9 Yes
Application cisco unified_communications_manager 12.0\(1\) Yes
Application cisco unified_communications_manager 12.0\(1\) Yes
Application cisco unified_communications_manager 12.5\(1\) Yes
Application cisco unified_communications_manager 12.5\(1\) Yes
Application cisco unified_communications_manager 12.5\(1\)su1 Yes
Application cisco unified_communications_manager 12.5\(1\)su1 Yes
Application cisco unified_communications_manager 12.5\(1\)su2 Yes
Application cisco unified_communications_manager 12.5\(1\)su2 Yes
Application cisco unified_communications_manager 12.5\(1\)su3 Yes
Application cisco unified_communications_manager 12.5\(1\)su3 Yes
Application cisco unified_communications_manager 12.5\(1\)su4 Yes
Application cisco unified_communications_manager 12.5\(1\)su4 Yes
Application cisco unified_communications_manager 12.5\(1\)su5 Yes
Application cisco unified_communications_manager 12.5\(1\)su5 Yes

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.